giovedì 25 settembre 2014

NYT Science: A Tiny Emissary From the Ancient Past

A Tiny Emissary From the Ancient Past
By CARL ZIMMER

Viroids, naked loops of RNA, attack crops and other plants today, but new research suggests they existed at the earliest stages of life on Earth.

Published: September 25, 2014 at 4:00AM

via NYT Science http://ift.tt/1vjE81q