It’s a warm, sunny day in April, and all the trees are in bloom. But how did they know it was warm and sunny? And on a warm, sunny day in February, what keeps them from blooming? Scott Aker, a horticulturalist at the U.S. National Arboretum, tells Robinson Meyer how the process works and what to look for.
Watch more videos: http://www.theatlantic.com/video
Subscribe to The Atlantic on YouTube: http://bit.ly/1pE29OW
Twitter: https://twitter.com/TheAtlanticVID
Facebook: https://www.facebook.com/TheAtlantic
Google+: https://plus.google.com/+TheAtlantic
Subscribe to The Atlantic on YouTube: http://bit.ly/subAtlanticYT
politics How Do Trees Know When It's Spring? | |
| 118 Likes | 118 Dislikes |
| 19,685 views views | 384K followers |
| How-to & Style | Upload TimePublished on 28 Apr 2015 |
Không có nhận xét nào:
Đăng nhận xét