Hidden DNA is revealing secrets of animals' lives - National Geographic

New studies of genetic material, or eDNA, shed by plants and animals are providing astonishing biological insights.

It had been more than 140 years since a Rio Grande sirena slippery, two-legged, foot-long salamander protected by the state of Texashad been found near Eagle Pass, a town on the United States-Mexico … [+10222 chars]

full article...