31 July 2009

Evolving with a mountain

the changes in the muscle cells probably evolved over a long period of time, perhaps as the Himalayas, one of the Earth’s youngest mountain chains, grew and the birds would have had to fly higher and higher.
- from report about a paper by Graham R. Scott et al on how bar-headed geese fly at 9,000m or 30,000 feet over Himalaya.

No comments: