What Happens When Scientists Get It Wrong?

Jul 13, 2012
Originally published on July 13, 2012 11:25 am

Reporting in Science, two teams of scientists say they were unable to replicate the results of a 2010 study claiming to have found 'alien life' on Earth--a bacterium that could build its DNA using arsenic. Science journalist Carl Zimmer talks about how the controversy played out online, and how science corrects itself.