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An iron-rich, porous material can remove arsenic from drinking water in under two hours, say Chinese scientists. Arsenic is notoriously toxic, proving fatal to the majority of living organisms in high doses. Elevated levels of arsenic in groundwater in countries such as Bangladesh pose a serious threat to human health. But traditional methods to remove the arsenic struggle to eliminate the more dominant arsenic ion, arsenite. Now, Kang Li and colleagues from Harbin Medical University have removed arsenite from water samples using ferrihydrite - a low cost, natural mineral found on the Earth's surface. Already known to absorb arsenic, its efficiency is...

Amid a flurry of criticism, a NASA-funded team on Thursday backed off the more extravagant, textbook-changing claims they'd made about a bacterium that had allegedly substituted arsenic for phosphorus in its DNA. The original announcement, made at a NASA news conference Dec. 2, seemed to break a cardinal rule of biology that all organisms need some phosphorus to survive. NASA researchers claimed to have discovered an exotic organism in California's Mono Lake that lived instead on arsenic, thus broadening the types of life that may exist in the universe. The news made headlines worldwide including a New York Times story...

I gave it the front-page treatment when the big announcement was made, so now the big skeptical response gets front-page treatment too. Simply devastating — so much so that I wonder why it fell to an outfit like Slate to put it together. Did the Times or WaPo not have enough of an inkling about NASA’s discovery to survey naysayers before writing up their reports on the “discovery”? This information would have come in a lot handier when everyone was still paying attention to this story. As soon Redfield started to read the paper, she was shocked. “I was outraged...

NASA has set the interwebs a-tremble with a teasing announcement to the global media that a news conference will be held in Washington DC on Thursday "to discuss an astrobiology finding that will impact the search for evidence of extraterrestrial life". The space agency's routine ploy of trailing major briefings in advance has caused trouble before. In 2008, "revelations" that the White House had been informed of a NASA announcement's content before the media caused fevered speculation ahead of a briefing on data from the "Phoenix" polar Mars lander.

MEDIA ADVISORY : M10-167 NASA Sets News Conference on Astrobiology Discovery; Science Journal Has Embargoed Details Until 2 p.m. EST On Dec. 2 WASHINGTON -- NASA will hold a news conference at 2 p.m. EST on Thursday, Dec. 2, to discuss an astrobiology finding that will impact the search for evidence of extraterrestrial life. Astrobiology is the study of the origin, evolution, distribution and future of life in the universe. The news conference will be held at the NASA Headquarters auditorium at 300 E St. SW, in Washington. It will be broadcast live on NASA Television and streamed on the...

Life in space? Not quite. But to scientists in the arcane field of astrobiology, it's still pretty cool. Scientists at NASA's Astrobiology Institute report they have found bacteria -- in Mono Lake, Calif., not in space -- that could be made to live on arsenic. The organism is called GFAJ-1. The finding is important because it expands the prevailing view of what it takes for living things to survive.

Alan Boyle writes:NASA's secret is finally out: Researchers say they've forced microbes from a gnarly California lake to become arsenic-gobbling aliens. It may not be as thrilling as discovering life on Titan, but the claim is so radical that some chemists aren't yet ready to believe it. If the claim holds up, it would lend weight to the idea that life as we know it isn't the only way life could develop. Organisms with truly alien biochemistry could conceivably arise on a faraway exoplanet, or on the Saturnian moon Titan, or even here on Earth. "Our findings are a reminder...

Take a hastily arranged NASA press conference, add a vague allusion to an “astrobiology discovery,” and you’ve got a recipe for mass web-fueled speculation that E.T. is finally coming home. On Tuesday, the U.S. space agency announced a press conference to be held at 2pm EST on Thursday to “discuss an astrobiology finding that will impact the search for evidence of extraterrestrial life.” While that brief teaser is all NASA has said on the issue, many others have since taken to the web to complete the narrative. “If I had to guess at what NASA is going to reveal on...

Incredible microbe found in California lakeNasa scientists are set to announce that bacteria have been discovered that can survive in arsenic, an element previously thought too toxic to support life, it can be revealed. In a press conference scheduled for tomorrow evening, researchers will unveil the discovery of the incredible microbe - which substitutes arsenic for phosphorus to sustain its growth - in a lake in California. The remarkable discovery raises the prospect that life could exist on other planets which do not have phosphorus in the atmosphere, which had previously been thought vital for life to begin. But it...

It's believed up to 77 million people have been exposed to toxic levels of arsenic from contaminated drinking water in Bangladesh. The Lancet medical journal reports the high arsenic exposure is the tragic result of a community development project in the 1970's that went terribly wrong. The UN's World Health Organisation is describing Bangladesh's arsenic crisis as "the largest mass poisoning of a population in history." Presenter: Matt Abud Speakers: Dr Dipankar Chakraborti, head of School of Environmental Studies, Calcutta's Jadaypur University; Arif Ahamed, project team leader, World Bank . ABUD: Over twenty percent of all deaths in the study...

MBL, WOODS HOLE, MA-The ability to mount an immune response to influenza A (H1N1) infection is significantly compromised by a low level of arsenic exposure that commonly occurs through drinking contaminated well water, scientists at the Marine Biological Laboratory (MBL) and Dartmouth Medical School have found. Joshua Hamilton, the MBL's Chief Academic and Scientific Officer and a senior scientist in the MBL's Bay Paul Center; graduate student Courtney Kozul of Dartmouth Medical School, where the work was conducted; and their colleagues report their findings this week in the journal Environmental Health Perspectives. "When a normal person or mouse is infected...

The days when the dietary supplements industry is allowed to regulate itself may be numbered following release of a federal report addressing growing concerns about dietary supplement industry. The report, issued this month by the Government Accountability Office, calls on the Food and Drug Administration to expand adverse event reporting and increase its efforts to educate the public about the safety, efficacy, and labeling of these products. The GAO investigation into supplement safety was made at the request of Congress. According to the 77-page report, the FDA should be tracking all levels of adverse events related to the use of...

Arsenic has poisoned a lake in southwest China that was famous for its hot springs, affecting the drinking water of at least 26,000 people, state media said. Trucks were carrying 80 tonnes of water each day to affected areas near Yangzonghai lake, in Yunnan province. In June the local environmental protection bureau detected dangerous levels of arsenic in the lake. A nearby firm had not built proper containment pools for its waste, and years of accumulated arsenic were leaching through into the groundwater and the lake, an investigation found. The factory has been closed and its managers detained. Odourless, tasteless,...

Reviewed By Elizabeth Klodas, MD, FACC 13 Million Americans Are Exposed to Dangerous Levels of Arsenic Through Drinking Water Exposure to arsenic, typically through drinking water, is linked to diabetes, according a study published in the Journal of the American Medical Association. Thirteen million Americans — and millions more worldwide — are exposed to drinking water contaminated with more inorganic arsenic than the Environmental Protection Agency has deemed safe. The EPA standard is 10 micrograms per liter. Researchers, led by Ana Navas-Acien, MD, PhD, of the Johns Hopkins Bloomberg School of Health, studied 788 adults who had their urine tested...

Arsenic risk high in Sumatra, Myanmar, Cambodia: study Fri Jul 11, 2:15 PM ET Eastern Sumatra, the Irrawaddy delta in Myanmar and Cambodia's Tonle Sap lake are among areas in Southeast Asia facing a high risk of arsenic contamination in the water, according to a study published on Friday. The researchers use innovative digitalised techniques, drawing on geology, geography and soil chemistry, to compile a "probability map" of naturally-occurring arsenic concentrations in five Southeast Asian countries and Bangladesh. The map is intended as a useful pointer for health watchdogs, urban planners and water engineers worried about concentrations of this poison...

Researchers from the University of Dundee in the UK were able to reveal for the first time how Arsenic and other molecules like Arsenic trioxide (ATO), known for many years to cure the acute promyelocytic leukemia (APL), help break down the protein causing the leukemia. This achievement may help researchers develop less poisonous drugs to fight the disease.   Professor Ronald Hay (Credit: University of Dundee) APL is a sub-type of AML (acute myelogenous leukemia), and is common at the relatively young age of 40 (AML is common at the age of about 70). In 1992, ATO was found to...

Rice Grown In United States Contains Less-dangerous Form Of ArsenicA new study analyzing several types of rice finds that grains grown in the United States may be safer than varieties grown in other countries. (Credit: Courtesy of Yamily J. Zavala) ScienceDaily (May 21, 2008) — Rice grown in the United States may be safer than varieties from Asia and Europe, according to a new global study of the grain that feeds over half of humanity. The study evaluated levels of arsenic, which can be toxic at high levels, in rice worldwide. Yamily J. Zavala and colleagues point out that rice...

Wife cleared of murder ‘overwhelmed with emotion’ Freed widow fears prisons are full of other wrongly convicted people By Bob Considine TODAYShow.com contributor updated 9:45 a.m. ET, Tues., April. 22, 2008 Having been exonerated of charges she poisoned her Marine husband to death, Cynthia Sommer is out of prison and renewing bonds with her children. But in the back of her mind, Sommer cannot help but wonder how many other wrongly convicted people languish in America’s crowded prisons. “There are so many people who this happens to, and that’s scary,” Sommer told TODAY co-host Matt Lauer on Tuesday. “That’s a...

Garlic combats arsenic poisoning 14 January 2008 NewScientist.com news service Keya Chaudhuri, Indian Institute of Chemical Biology Information on arsenic in drinking water, WHO Arsenic in Bangladesh, British Geological Survey Garlic may provide some relief for millions of Bangladeshis and Indians whose drinking water is contaminated with arsenic. Keya Chaudhuri of the Indian Institute of Chemical Biology in Kolkata, and her colleagues gave rats daily doses of arsenic in their water, in levels equivalent to those found in groundwater in Bangladesh and West Bengal. Rats which were also fed garlic extracts had 40 per cent less arsenic in their blood...

A team of Dartmouth Medical School (DMS) researchers has determined that low doses of arsenic disrupt the activity of a hormone critical in development. The finding is further evidence that arsenic at low doses (at levels found in U.S. drinking water in some areas) can be harmful. "Arsenic is a natural, yet pervasive, chemical in the environment; we can't seem to escape it," says Joshua Hamilton, one of the authors on this study and the director of the Center for Environmental Health Sciences at Dartmouth and Dartmouth's Superfund Basic Research Program on Toxic Metals. "By learning how it adversely affects...