Biologists previously believed modern birds had evolved 20 million years later than the new evidence suggests.

The first known dragonfly fossil had a wingspan of 29 inches. The Hine's emerald dragonfly, found in scattered locations throughout the Great Lakes region and Missouri, isn't anywhere near that size, ...

The nanopillars on the surface of a dragonfly wing (magnified 20,000 times). Source: RMIT University Multifunctional Mechano-biocidal Materials Research Group: Denver Linklater, Phuc Le ...