lunedì 26 ottobre 2015

NYT Science: Saving a Rare Tree Worlds Away

Saving a Rare Tree Worlds Away
By RACHEL NUWER

Twenty years ago, there were just 21 Betula chichibuensis birch trees remaining in the wild. Botanists have now germinated seeds from the species in hopes of saving it.

Published: October 27, 2015 at 05:00AM

via NYT Science http://ift.tt/1Wel28u