I coauthored a paper on a microbe that might incorporate arsenic in its major molecules. It was wrongly retracted. What can ...

A controversial arsenic microbe study unveiled 15 years ago has been retracted. The study’s authors are crying foul ...

In all, the astronomic hype was met with earth-shaking backlash in 2010 and 2011. In 2012, Science published two studies ...

Arsenic is a crystalline metalloid found in the Earth's crust, but in its free form it is quite rare. The element is typically found in minerals, such as arsenopyrite, realgar and orpiment ...

That's because all known forms of life need those six elements. But Wolfe-Simon started thinking about phosphorous and the element just below it on the periodic table: arsenic.

Biologists often speak of CHONPS life—the concept that life as we know it cannot work without the elements carbon, hydrogen, oxygen, nitrogen, phosphorus, and sulfur. Arsenic sits below ...

If ever there was an element that epitomizes the notion that chemicals might be good or bad depending on their use, arsenic must be it. Katherine Haxton explains why.