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image: Dog-Wolf Split

Dog-Wolf Split

By Jef Akst | January 17, 2014

Yet another genetic study of modern canines, both wild and domestic, supports the notion that humans domesticated dogs before growing crops.

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image: Arsenic-based Life Challenged Again

Arsenic-based Life Challenged Again

By Hannah Waters | January 24, 2012

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

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image: Arsenic-based life debate continues

Arsenic-based life debate continues

By Jessica P. Johnson | 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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