"The raising of public awareness, and the involvement of all citizens in biodiversity conservation are required," Li noted.

Crowds gathered underneath the trees to enjoy the delicate flowers. Yuantongshan Park in Kunming, China's Yunnan Province, also featured bright-pink cherry blossoms. In London, people snapped ...

Before the Flying Tigers were stationed in Kunming, they trained at a British airfield in Burma. Smith (at left) sifts through parts in a P-40 boneyard. Claire Chennault (between men in flight ...