The "Death Row Granny" Who Was Both Diabolical Killer and Political Pawn

Yesterday, we got to know Leonarda Cianciulli, who turned her victims into soap and cake. Here’s another in our series on female serial killers: North Carolina’s Velma Barfield, the “Death Row Granny” who poisoned four and maybe more, including her own mother, and was executed in 1984 at the age of 52. »6/24/15 8:00pm6/24/15 8:00pm

Scientists Make Bricks With Sludge Filtered From Arsenic-Laced Water

Arsenic-contaminated water is a massive problem in the developing world. But, even when you filter it out, the toxic sludge that the process produces often gets dumped right back into the water supply. It's tough to dream up a use for arsenic soup, but one research team finally has: They're making bricks out of it. »3/31/14 5:32pm3/31/14 5:32pm

NASA's arsenic-life findings debunked in two just-published studies

In 2010, NASA called a press conference to make one of the biggest announcements in scientific history: researchers had discovered an unusually hardy bacterium that could not only tolerate exposure to arsenic, but actually incorporate the poisonous element into its DNA. The team's findings, if correct, would have gone… »7/09/12 10:15am7/09/12 10:15am