Listen to stories on new evidence for double dog domestication, what traces of mercury in coral can tell us about local wars, and an update to a classic adaptation story, with online news editor David Grimm. Brendan Colón talks about a bionic leaf system that captures light and carbon and converts it to several different types of fuels with host Sarah Crespi.  

[Music: Jeffrey Cook; Image: Andy Phillips/Flickr/CC BY-ND 2.0]