Asteroid crash gives rise to reign of flowers

About 66 million years ago, the crash of a huge asteroid in what is now the Yucatan plunged the Earth into darkness, transforming tropical rainforests and giving rise to the reign of flowers. [Research supported by U.S. National Science Foundation grant EAR 1829299.] Learn more in the ...This is an NSF Multimedia Gallery item.
Source: NSF Multimedia Gallery - Category: Science Source Type: video