Venezuelan Court: Chávez Swearing-In Can Be Postponed

CARACAS, Venezuela (AP) — Venezuelan opposition leader Henrique Capriles is condemning the Supreme Court's endorsement of a delay in President Hugo Chavez's inauguration.

The Supreme Court sided with Venezuela's government and ruling party earlier Wednesday in the heated dispute with the opposition while the ailing leader struggles with complications a month after cancer surgery in Cuba.

Capriles says that "institutions should not respond to the interests of a government."

Supreme Court President Luisa Estella announced that it's legal for lawmakers to delay Chavez's swearing-in for a new term, which had been scheduled for Thursday.

Pro-Chavez lawmakers voted Tuesday to delay the ceremony, allowing Chavez to take the oath of office at a later date before the Supreme Court.

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Men and Women of (Limited) Letters: Must-Follow Twitter Accounts of 2013

Scientific American editors voted in recent weeks on the 20 most informative Twitter accounts to stay abreast of the latest ideas, issues and developments in science and technology. We weeded through hundreds of lists and feeds to select the most brilliant and engaging, as well as the quirkiest of the bunch.Our picks are often witty, sometimes eccentric and occasionally silly, but each brings valuable insights to his or her area of expertise. For the latest, greatest tweets on science, technology, journalism, astronomy, physics, mathematics and more, check out these top 20 Twitter accounts of 2013, listed here in alphabetical order.

Must-Follow Twitter Accounts of 2013

Next » BBC Science @BBCscience

 Pay attention to BBC Science for breaking science and environmental news from a global perspective. Tweets are most often serious, with the occasional story about whether a toilet seat really is the dirtiest item in the house. The BBC offers variety suitable to both the casual consumer and the diehard nerd.

« Previous Intro

Must-Follow Twitter Accounts of 2013

Next » Deborah Blum @DeborahBlum

Deborah Blum’s tweets about poison, murder and other interesting articles and quips aren’t all that make her Twitter feed unique. It also stands out for her insights into science journalism. Blum often posts jobs, tips and tricks of the trade that will motivate any aspiring science blogger to break out the laptop and start posting.
By day, Sean Carroll is a theoretical physicist. By night he’s a “truth vigilante.” The Caltech researcher writes lofty pieces about eternity and dark matter, and tweets fascinating facts about his field.

 This NASA Twitter account gained notoriety when the car-size rover Curiosity landed on Mars in August 2012. With its witty persona, pop culture references and updates on its forays across the surface of the Red Planet, @MarsCuriosity is a must-follow for 2013—and the rest of its multiyear tour. Also check out the “Curiosity Explorer” badge on Foursquare and watch the rover’s New Year’s Eve message on YouTube
David Dobbs is an accomplished science journalist who is big on audience engagement in the new media milieu. His Twitter feed is punctuated with responses to readers weighing in on a wide variety of topics, especially cognitive science. Dobbs also tweets sporadically about his personal life and his work for Wired. He’s working on his fifth book.
Maryn McKenna, a specialist on food policy, public health and infectious disease, has built and cultivated a dedicated online following. Her tweets and posts are smart, quirky and highly informative. A seasoned science journalist, she uses social media to nerd out on a daily basis, so join in the geeky fun.
Former Scientific American special projects guru Christopher Mims isn’t shy. Opinionated and straightforward, the technology and sustainability journalist, now at QuartzNews, stays ahead of the pack. Mims frequently engages with his audience and uses crowd-sourcing to gather material for many of his stories.
Scientific American editors enjoy checking in on Nature News‘s hard-nosed, clever twitter feed.  One might suspect that our favor for it derives from the fact that Scientific American is also part of Nature Publishing Group, but we actually operate as editorially independent units. Follow Nature News especially for investigative reporting on science scandals and international science policy, as well as the latest important biomedical and physics news.

 Founder and CEO of O’Reilly Media Tim O’Reilly reports technology trends and comments on advocacy issues. His Twitter feed is dominated by references to Silicon Valley and e-book deals. Follow his tweets for insightful coverage of the technical world.
John Allen Paulos is a PhD with character. He’s wearing a bow tie in his profile picture, and his favored emoticon is a winking smiley face. Paulos’s tweets can be a tad cryptic for the layperson, but the mathematician has such a great sense of humor that you’re sure to laugh out loud at some point—even if you don’t quite understand the joke.
Accomplished blogger Phil Plait has just migrated his popular “Bad Astronomy” blog to Slate. The author, skeptic, father and punster primarily covers the ins and outs of the solar system. The best part about Plait’s Twitter feed is his daily #BAFact, wherein he throws strange-but-true scraps of science to his curious followers.

 Veteran science journalist Paul Raeburn has turned his eye in recent years to good-natured meta-media, covering science reporting itself for the Knight Science Journalism Tracker while also covering reseach on fatherhood. Raeburn takes reporters to task for sloppy thinking, points out inaccuracies and addresses ethical dilemmas. Follow his account just to read the back-and-forth between him and his targets.
Andy Revkin is a leader in the environmental reporting field, covering everything from fracking to global warming. Check out Revkin’s DotEarth blog in The New York Times too for his breaking news coverage—it’s all the environmental news that’s fit to cover.

 Science Friday, part of National Public Radio’s Talk of the Nation radio program, packs its Twitter feed with tantalizing links that just beg to be clicked on. @SciFri looks at daily news through a scientific lens, including live tweets to provide context during the weekly broadcast. The result is an entertaining bundle of scientific discoveries, intrigues and debunkings.
Scientific American‘s contributors are a brilliant group of reporters, bloggers and commentators, if you’ll pardon this moment of pride. Creativity, skepticism and authoritative context are a big part of what makes our coverage so engaging and worthwhile. Check out this Twitter list and follow your favorites.
Nate Silver, the most celebrated political statistician of the 2012 election, started out as a forecaster of baseball player performance. When he turned his attention to U.S. presidential elections, using statistical models to accurately predict what was thought to be unpredictable, he became a sensation. Although this past year’s electoral frenzy is behind us, Silver is still at work making predictions we’d be foolish to ignore.
Steven Strogatz holds the esteem of math wunderkinds as well as those who are iffy on formulas. He’s hardly a typical numbers-cruncher. The Cornell University professor has a knack for taking on complex topics and making them interesting, even to full-on mathphobes. In his recent book, The Joy of X, discussions range from the number of people one should date before settling down to how HBO’s The Sopranos can help us understand calculus. His Twitter account is similarly entertaining.
Not following Neil DeGrasse Tyson on Twitter? Beware: science nerds who don’t wake up each morning to the rational witticisms of NGT in their feed risk losing all geek cred. If you fit this description, please remedy that situation—now.
Blogger Ed Yong diligantly weaves a love of data into his prose, while still managing to craft posts that are accessible to readers with little to no science background. By covering new findings skeptically and tweeting prolifically, he has built a readership that relies on him for science news. Join the club.
A self-described “champion of underappreciated life-forms,” Carl Zimmer tends to tackle stories about parasites, viruses and quantum earthworms. Follow his feed, probably the most followed of any science writer, for solid reporting and captivating writing.

« Previous Ed Yong @EdYong209

Must-Follow Twitter Accounts of 2013

Restart the list » Introduction

Follow Scientific American on Twitter @SciAm and @SciamBlogs.Visit ScientificAmerican.com for the latest in science, health and technology news.
© 2013 ScientificAmerican.com. All rights reserved.
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David Bowie's New Single Is No Splashy Comeback

By Chuck Arnold

01/09/2013 at 05:00 PM EST

"Where Are We Now?" ponders a plaintive David Bowie on his comeback single after seemingly retiring from music. Indeed, this august, atmospheric ballad previews his first album in 10 years, The Next Day, due out March 12.

Out of nowhere the song was dropped in the middle of the night on Jan. 8 – which just happens to be Bowie's birthday (he turned 66). The low-key release certainly suits the understated tone of the tune, which is hardly the splashy comeback one might have expected from the glam god who was once Ziggy Stardust.

Instead, Bowie plays the reflective elder statesman dispensing some existential lyrics: "The moment you know, you know you know."

While the track – produced by Tony Visconti, who also worked on the star's Berlin Trilogy from 1977 to 1979 – ultimately doesn't give many answers, it at least tells us where Bowie has been lately. And it's a welcome return from one of our great rock heroes.

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Retooling Pap test to spot more kinds of cancer

WASHINGTON (AP) — For years, doctors have lamented that there's no Pap test for deadly ovarian cancer. Wednesday, scientists reported encouraging signs that one day, there might be.

Researchers are trying to retool the Pap, a test for cervical cancer that millions of women get, so that it could spot early signs of other gynecologic cancers, too.

How? It turns out that cells can flake off of tumors in the ovaries or the lining of the uterus, and float down to rest in the cervix, where Pap tests are performed. These cells are too rare to recognize under the microscope. But researchers from Johns Hopkins University used some sophisticated DNA testing on the Pap samples to uncover the evidence — gene mutations that show cancer is present.

In a pilot study, they analyzed Pap smears from 46 women who already were diagnosed with either ovarian or endometrial cancer. The new technique found all the endometrial cancers and 41 percent of the ovarian tumors, the team reported Wednesday in the journal Science Translational Medicine.

This is very early-stage research, and women shouldn't expect any change in their routine Paps. It will take years of additional testing to prove if the so-called PapGene technique really could work as a screening tool, used to spot cancer in women who thought they were healthy.

"Now the hard work begins," said Hopkins oncologist Dr. Luis Diaz, whose team is collecting hundreds of additional Pap samples for more study and is exploring ways to enhance the detection of ovarian cancer.

But if it ultimately pans out, "the neat part about this is, the patient won't feel anything different," and the Pap wouldn't be performed differently, Diaz added. The extra work would come in a lab.

The gene-based technique marks a new approach toward cancer screening, and specialists are watching closely.

"This is very encouraging, and it shows great potential," said American Cancer Society genetics expert Michael Melner.

"We are a long way from being able to see any impact on our patients," cautioned Dr. Shannon Westin of the University of Texas MD Anderson Cancer Center. She reviewed the research in an accompanying editorial, and said the ovarian cancer detection would need improvement if the test is to work.

But she noted that ovarian cancer has poor survival rates because it's rarely caught early. "If this screening test could identify ovarian cancer at an early stage, there would be a profound impact on patient outcomes and mortality," Westin said.

More than 22,000 U.S. women are diagnosed with ovarian cancer each year, and more than 15,000 die. Symptoms such as pain and bloating seldom are obvious until the cancer is more advanced, and numerous attempts at screening tests have failed.

Endometrial cancer affects about 47,000 women a year, and kills about 8,000. There is no screening test for it either, but most women are diagnosed early because of postmenopausal bleeding.

The Hopkins research piggybacks on one of the most successful cancer screening tools, the Pap, and a newer technology used along with it. With a standard Pap, a little brush scrapes off cells from the cervix, which are stored in a vial to examine for signs of cervical cancer. Today, many women's Paps undergo an additional DNA-based test to see if they harbor the HPV virus, which can spur cervical cancer.

So the Hopkins team, funded largely by cancer advocacy groups, decided to look for DNA evidence of other gynecologic tumors. It developed a method to rapidly screen the Pap samples for those mutations using standard genetics equipment that Diaz said wouldn't add much to the cost of a Pap-plus-HPV test. He said the technique could detect both early-stage and more advanced tumors. Importantly, tests of Paps from 14 healthy women turned up no false alarms.

The endometrial cancers may have been easier to find because cells from those tumors don't have as far to travel as ovarian cancer cells, Diaz said. Researchers will study whether inserting the Pap brush deeper, testing during different times of the menstrual cycle, or other factors might improve detection of ovarian cancer.

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Judge weeps at "Dating Game" serial killer's 'horrific acts'

California serial killer Rodney Alcala was sentenced to additional prison time in New York for the murders of two more women, a case that brought a veteran judge to tears during the hearing.

Alcala, who is already on death row in California for the murders of four women and a girl, pleaded guilty in December to the 1971 murder of Cornelia Crilley and the 1977 murder of Ellen Hover, both in New York. On Monday, New York Supreme Court Judge Bonnie Wittner handed down a sentence of 25 years to life in prison, the Wall Street Journal reported.

"This kind of case is something I've never experienced, hope to never again. I just want to say I hope these families find some peace and solace for these inexplicably brutal and horrific acts," Wittner said, according to the Journal.

PHOTOS: California serial killers

Wittner then dissolved into tears. "As I said, in 30 years I've never had a case like this," she said.

Alcala raped and strangled Crilley, a 23-year-old TWA flight attendant, inside her Upper East Side apartment in 1971. Six years later, he killed Hover, also 23 and living in Manhattan. Her body was found in Westchester County, not far from her family's estate. 

The Journal reported that many in attendance at Monday's sentencing wore stickers bearing the black-and-white photograph that initially appeared in stories about Crilley's death. "Cornelia Always in Our Hearts," the stickers read.

Crilley's sister, Katie Stigell, spoke to the court, using most of her time talking about her sister, who "was in her prime" and "wouldn't hurt anybody." But Stigell also had words for Alcala.

"Mr. Alcala, I want you to know you broke my parents' hearts," Stigell said. "They never really recovered."

Hover's stepsisters declined to appear in court. Instead, prosecutor Alex Spiro read a letter on their behalf, the Journal reported.

"Ellen was a sweet, kind, generous, compassionate, loving and beautiful young woman. She chose to see the good in everyone she met because she had a huge and open heart," the letter read. "Her senseless murder irreparably damaged our family."

Alcala, a self-styled playboy who once appeared on "The Dating Game" TV match-making show, spent much of the 1970s eluding police by changing identities and locales. He has been behind bars since 1979, when he was arrested in the death of 12-year-old Robin Samsoe of Huntington Beach.

Twice he was sent to death row for murder, but both convictions were overturned on appeal. In February 2010, he was convicted again for Samsoe's murder and for the murders of four women in Los Angeles County. He is now awaiting execution.

At a news conference after Monday's hearing, Manhattan Dist. Atty. Cyrus Vance said Alcala would be returned to California, where he is appealing his death-penalty conviction. Should that conviction be overturned, Vance said, Alcala would return to New York for his sentence.

The extent of Alcala's crimes were revealed as a task force formed by the Los Angeles Police Department and other agencies that was examining cold cases tied him to slayings across Southern California. New York police had long considered Alcala a suspect in the slayings of Crilley and Hover and had taken impressions of his teeth in 2003. Alcala had lived in New York periodically between 1968 and 1977. 

During that period, Crilley was found raped and strangled with her nylon stockings in her Manhattan apartment. Around that time, Alcala was working at a summer camp for girls in New Hampshire, authorities said.

Hover went missing in July 1977 and her body was discovered the following year. Before she disappeared, she had written the name "John Berger" in a planner, a name police believe Alcala used as an alias while in New York.

The Southern California killings began just a few months later.

THE ALCALA CASE: A TIMELINE

---

1972 — Alcala is convicted in the 1968 rape and beating of an 8-year-old girl.

Nov. 10, 1977 — The body of 18-year-old Jill Barcomb is found in the Hollywood Hills. She had been sexually assaulted, bludgeoned and strangled with a pair of blue pants.

Dec. 16, 1977 — Georgia Wixted, 27, is found beaten to death at her home in Malibu. She had been sexually assaulted and strangled.

1978 — Alcala appears in an episode of “The Dating Game” as Bachelor No. 1.

June 24, 1978 — Charlotte Lamb, a 32-year-old legal secretary from Santa Monica, is found in the laundry room of an El Segundo apartment complex. She had been sexually assaulted and strangled with a shoelace. 

June 14, 1979 — Jill Parenteau, 21, of Burbank is found strangled on the floor of her Burbank apartment.

June 20, 1979 – Robin Samsoe, 12, disappears near the Huntington Beach Pier. Her body is found 12 days later in the Sierra Madre foothills.

July 24, 1979 — Rodney James Alcala, an unemployed photographer, is arrested at his parents’ Monterey Park home.

September 1980 – Alcala is convicted of the 1978 rape of a 15-year-old Riverside girl and sentenced to nine years in state prison.

June 20, 1980 — Orange County Superior Court Judge Philip E. Schwab sentences Alcala to death after he is convicted of Samsoe's murder.

July 11, 1980 — The Los Angeles County district attorney’s office files murder, burglary and sexual assault charges against Alcala in the slaying of Parenteau.

April 15, 1981 — The L.A. district attorney’s office tells a judge that prosecution of Alcala in the Parenteau case could not proceed because a key witness admitted that he had committed perjury in another case.

Aug. 23, 1984 — The state Supreme Court reversed Alcala’s murder conviction in connection with Samsoe, ruling that the jury was improperly told about Alcala’s prior sex crimes.

June 20, 1986 — For the second time, Alcala is convicted for Samsoe’s murder and sentenced to death in Orange County Superior Court.

Dec. 31, 1992 — The California Supreme Court unanimously upholds Alcala’s death sentence.

April 2, 2001 — A federal appellate court overturns Alcala’s death sentence in the Samsoe case, ruling that the Superior Court judge precluded the defense from presenting evidence “material to significant issues.”

June 5, 2003 — The Los Angeles County district attorney’s office files murder charges against Alcala alleging that he killed Wixted during a burglary and rape.

Sept. 19, 2005 — Additional murder charges are filed against Alcala in connection to the deaths of Barcomb, Wixted and Lamb.

Jan. 11, 2010 — Alcala’s trial for the five murders begins. He represents himself.

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— Kate Mather and Richard Winton

Photo: Convicted serial killer Rodney Alcala appears in a New York courtroom on Monday, where he was sentenced for two murders in the 1970s. Credit: David Handschuh / Associated Press

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British Soldier Killed by Afghan Soldier

KABUL, Afghanistan — A British soldier who was helping to build new quarters for the Afghan National Army at a small base in southern Afghanistan was fatally shot by an Afghan soldier in the first insider attack of 2013, military officials said Tuesday.

The attacker, who struck on Monday evening, also shot and wounded six other British soldiers in the engineering regiment, three of them seriously, before being killed, Afghan and British officials said.

During the attack, which occurred at Camp Hazrat, a joint patrol base in the Nahr-e-Seraj District of Helmand Province, several Afghan soldiers were also shot at but were not wounded, said Maj. Gen. Sayed Maluk, the commanding general of the Afghan Army’s 215 Corps, in a statement to the British Forces Broadcasting Service, an arm of the British Defense Ministry.

“It was the British team that sustained injuries,” General Maluk said. “Unfortunately, they were engineering personnel and they were building billeting for the A.N.A.”

He said the Afghan Army was doing everything it could to prevent such attacks. Until 2011, insider attacks, also known as “green on blue” attacks, were a relatively minor problem for the Western military forces in Afghanistan.

But last year, 62 international troops and civilian contractors died in attacks by Afghan forces. Two additional attacks are still under investigation.

Many in the military see the escalation as a game changer that requires Western troops to stay at arm’s length from the Afghans they are supposed to be training and mentoring.

At one point late last summer, Gen. John R. Allen, the commander for international forces in Afghanistan, temporarily suspended joint patrols unless they were approved at the highest levels because of the risk.

Members of NATO units were required to carry weapons with a loaded magazine, and each unit assigned some troops as “guardian angels” to protect fellow soldiers from insider attacks during meetings with Afghans as well as on patrol.

The Afghan Defense Ministry overhauled its screening process for new recruits and rescreened those already deployed.

“Prior to this incident happening we have done almost everything that we can,” General Maluk said.

He said Afghan soldiers have been told by religious leaders inside the corps that the coalition forces “are not invaders, they are our friendly forces; they are not here to invade, but rather they are here to help us reconstruct this country.”

“But to them, the enemy is the enemy,” he said.

The Taliban claimed responsibility for arranging the infiltration into the Afghan Army of the soldier responsible for Monday’s shooting.

A Taliban spokesman, Qari Yusuf, said that the attacker’s name was Mohammed Qasim and that Mr. Qasim had “fulfilled his blessed duty.”

Mr. Qasim, who was between 23 and 25 years old and was known as Sheik Mohammed by his fellow soldiers, was a reticent young man who came from eastern Afghanistan, said Col. Abdul Saboor, an officer with the 215 Corps.

The sequence of events that led to the attack are still unclear, but it seems that the attacker, Mr. Qasim, was on guard duty in a tower as punishment for an infraction and initially began shooting at his Afghan compatriots. It is not clear if Mr. Qasim intended to kill them or whether it was a ploy to draw the British troops closer so that he could target them more easily.

Alissa J. Rubin reported from Kabul, and Taimoor Shah from Kandahar, Afghanistan. Sangar Rahimi contributed reporting from Kabul.

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Google offers New York City neighborhood free WiFi

(Reuters) – Google Inc and a New York redevelopment organization are providing a Manhattan neighborhood with free public WiFi Internet access, making it the largest area of coverage in New York City.

The search giant and the non-profit Chelsea Improvement Co are making Internet access available outdoors in Chelsea, which is home to Google’s New York offices and several technology start-ups.

The neighborhood is also home to many students, as well as residents of one of the city’s public housing developments.

Google does not plan to extend the program, a company spokesman said on Tuesday.

The company also provides free Internet access to the city of Mountain View, California, where its main campus is located.

New York City Mayor Michael Bloomberg and U.S. Senator Charles Schumer helped unveil the initiative.

(Reporting by Jennifer Saba in New York; Editing by Dan Grebler)

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Report: Death rates from cancer still inching down

WASHINGTON (AP) — Death rates from cancer are continuing to inch down, researchers reported Monday.

Now the question is how to hold onto those gains, and do even better, even as the population gets older and fatter, both risks for developing cancer.

"There has been clear progress," said Dr. Otis Brawley of the American Cancer Society, which compiled the annual cancer report with government and cancer advocacy groups.

But bad diets, lack of physical activity and obesity together wield "incredible forces against this decline in mortality," Brawley said. He warned that over the next decade, that trio could surpass tobacco as the leading cause of cancer in the U.S.

Overall, deaths from cancer began slowly dropping in the 1990s, and Monday's report shows the trend holding. Among men, cancer death rates dropped by 1.8 percent a year between 2000 and 2009, and by 1.4 percent a year among women. The drops are thanks mostly to gains against some of the leading types — lung, colorectal, breast and prostate cancers — because of treatment advances and better screening.

The news isn't all good. Deaths still are rising for certain cancer types including liver, pancreatic and, among men, melanoma, the most serious kind of skin cancer.

Preventing cancer is better than treating it, but when it comes to new cases of cancer, the picture is more complicated.

Cancer incidence is dropping slightly among men, by just over half a percent a year, said the report published by the Journal of the National Cancer Institute. Prostate, lung and colorectal cancers all saw declines.

But for women, earlier drops have leveled off, the report found. That may be due in part to breast cancer. There were decreases in new breast cancer cases about a decade ago, as many women quit using hormone therapy after menopause. Since then, overall breast cancer incidence has plateaued, and rates have increased among black women.

Another problem area: Oral and anal cancers caused by HPV, the sexually transmitted human papillomavirus, are on the rise among both genders. HPV is better known for causing cervical cancer, and a protective vaccine is available. Government figures show just 32 percent of teen girls have received all three doses, fewer than in Canada, Britain and Australia. The vaccine was recommended for U.S. boys about a year ago.

Among children, overall cancer death rates are dropping by 1.8 percent a year, but incidence is continuing to increase by just over half a percent a year. Brawley said it's not clear why.

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Serial killer stalked, killed 3 young mothers at bars, LAPD says

Authorities on Monday announced the arrest of a 72-year-old man who they allege is a serial killer responsible for the slayings of at least three women in Los Angeles in the 1980s.

Officials would not elaborate on the backgrounds of the
victims but said all three had children.

Los Angeles Police Department detectives allege that Samuel Little preyed on women in downtown and Central L.A., meeting some at bars before strangling them and dumping their bodies.

Police identified the victims as Carol Alford, 41, found dead on July
13, 1987; Audrey Nelson, 35, whose body was discovered Aug. 14, 1989;
and Guadalupe Apodaca, 46, found Sept. 2, 1989. Their bodies were
discovered in the Central Avenue-Alameda Street corridor, just south of
downtown.

Police allege that Little met women while cruising in his car or in bars.

If the allegations are true, it would mark the discovery of yet another serial killer operating in L.A. during the 1980s. Two years ago, the LAPD arrested a man they said was the notorious “Grim Sleeper,” allegedly responsible for at least 10 slayings in South L.A.

Little has been extradited to California from Kentucky, where he was taken into custody by the U.S. Marshals Service in early September on an unrelated criminal warrant, LAPD officials said. He was charged Monday by the L.A. County district attorney's office with three murder counts and special circumstances for multiple murder.

LAPD detectives Mitzi Roberts and Rick Jackson, who investigated the case, said there is DNA evidence linking Little to the Los Angeles slayings but would not elaborate, citing the ongoing investigation. Roberts and Jackson spent months crisscrossing the country following Little’s path.

Sources said they interviewed four women who said they survived attacks by Little and that they might testify in court.

Little has a long criminal record, dating to the 1950s. Detectives said they believe he committed thefts during the day to make money to finance his bar-hopping.

“It was theft by day and murder by night,” Jackson said.

Little, who also went under the name Samuel McDowell, committed crimes in 24 states but served relatively little time in state prison or county jail, the detectives said. In the early 1980s, he was accused of a two murders and two attempted murders in the Gainesville, Fla., and Pascagoula, Miss., areas.

Little was acquitted by a Florida jury in the strangulation death of Patricia Ann Mount, 26, whose body was discovered Sept. 12, 1982.

He was never brought to trial in the Mississippi cases, which include the strangulation death of Melinda LaPree, 24, on Sept., 14 1982. That case has been reopened by the Pascagoula Police Department in light of new evidence, authorities said.

Little moved from the South to California in the mid-1980s, moving first to San Diego.

He served more than two years in state prison after being convicted of assault and false imprisonment of two San Diego women in separate cases, police said. Shortly after being paroled, he moved to Los Angeles.

Little was being held in Wasco State Prison after being extradited and could not be reached for comment.

The LAPD is now working with other jurisdictions to determine whether Little might be a suspect in additional killings.

“If any law enforcement agencies have similar killings that occurred between 1960 and the present, they should contact LAPD cold case detectives,” Roberts said.

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Photo: Samuel Little. Credit: Los Angeles Police Department

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Oil Sand Industry in Canada Tied to Higher Carcinogen Level

Todd Korol/Reuters

An aerial view of a tar sands mine in Alberta, where cancer-causing compounds have been rising according to a study.

OTTAWA — The development of Alberta’s oil sands has increased levels of cancer-causing compounds in surrounding lakes well beyond natural levels, Canadian researchers reported in a study released on Monday. And they said the contamination covered a wider area than had previously been believed.

For the study, financed by the Canadian government, the researchers set out to develop a historical record of the contamination, analyzing sediment dating back about 50 years from six small and shallow lakes north of Fort McMurray, Alberta, the center of the oil sands industry. Layers of the sediment were tested for deposits of polycyclic aromatic hydrocarbons, or PAHs, groups of chemicals associated with oil that in many cases have been found to cause cancer in humans after long-term exposure.

“One of the biggest challenges is that we lacked long-term data,” said John P. Smol, the paper’s lead author and a professor of biology at Queen’s University in Kingston, Ontario. “So some in industry have been saying that the pollution in the tar sands is natural, it’s always been there.”

The researchers found that to the contrary, the levels of those deposits have been steadily rising since large-scale oil sands production began in 1978.

Samples from one test site, the paper said, now show 2.5 to 23 times more PAHs in current sediment than in layers dating back to around 1960.

“We’re not saying these are poisonous ponds,” Professor Smol said. “But it’s going to get worse. It’s not too late but the trend is not looking good.” He said that the wilderness lakes studied by the group were now contaminated as much as lakes in urban centers.

The study is likely to provide further ammunition to critics of the industry, who already contend that oil extracted from Canada’s oil sands poses environmental hazards like toxic sludge ponds, greenhouse gas emissions and the destruction of boreal forests.

Battles are also under way over the proposed construction of the Keystone XL pipeline, which would move the oil down through the western United States and down to refineries along the Gulf Coast, or an alternative pipeline that would transport the oil from landlocked Alberta to British Columbia for export to Asia.

The researchers, who included scientists at Environment Canada’s aquatic contaminants research division, chose to test for PAHs because they had been the subject of earlier studies, including one published in 2009 that analyzed the distribution of the chemicals in snowfall north of Fort McMurray. That research drew criticism from the government of Alberta and others for failing to provide a historical baseline.

“Now we have the smoking gun,” Professor Smol said.

He said he was not surprised that the analysis found a rise in PAH deposits after the industrial development of the oil sands, “but we needed the data.” He said he Hs not entirely expected, however, to observe the effect at the most remote test site, a lake that is about 50 miles to the north.

Asked about the study, Adam Sweet, a spokesman for Peter Kent, Canada’s environment minister, emphasized in an e-mail that with the exception of one lake very close to the oil sands, the levels of contaminants measured by the researchers “did not exceed Canadian guidelines and were low compared to urban areas.”

He added that an environmental monitoring program for the region announced last February 2012 was put into effect “to address the very concerns raised by such studies” and to “provide an improved understanding of the long-term cumulative effects of oil sands development.”

Earlier research has suggested several different ways that the chemicals could spread. Most oil sand production involve large-scale open-bit mining. The chemicals may become wind-borne when giant excavators dig them up and then deposit them into 400-ton dump trucks.

Upgraders at some oil sands projects that separate the oil bitumen from its surrounding sand are believed to emit PAHs. And some scientists believe that vast ponds holding wastewater from that upgrading and from other oil sand processes may be leaking PAHs and other chemicals into downstream bodies of water.

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