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image: Adapting to Arsenic

Adapting to Arsenic

By | June 1, 2015

Andean communities may have evolved the ability to metabolize arsenic, a trait that could be the first documented example of a toxic substance acting as an agent of natural selection in humans.

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image: How Rice Overcomes Arsenic

How Rice Overcomes Arsenic

By | October 20, 2014

Researchers have discovered a transporter protein in rice that sequesters arsenic in vacuoles, preventing the toxic element from traveling into grains.


image: No Arsenic-Based Life

No Arsenic-Based Life

By | July 9, 2012

Two new studies conclusively prove "arsenic-based" bacteria hailed by NASA researchers as a new form of life needs phosphate after all.


image: Arsenic-based Life Challenged Again

Arsenic-based Life Challenged Again

By | January 24, 2012

An attempt to regrow the infamous GFAJ-1 bacteria, reported to incorporate arsenic into its DNA backbone, has failed.


image: Genome Digest

Genome Digest

By | December 19, 2011

Meet the species whose DNA has recently been sequenced.


image: Arsenic-based life debate continues

Arsenic-based life debate continues

By | June 2, 2011

More than a dozen researchers voice their concerns about a 2010 paper that claims bacteria can use arsenic in place of phosphorus in its DNA and other biomolecules, such as proteins.



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