The new finds from two sites in Russia suggest that all major groups of dinosaurs may have had at least a few feathered species.

Books on vanishing frogs, secretive seabirds, and the fascinating history of feathers were among the winners of the 2012 AAAS/Subaru Science Books & Film (SB&F) Prize for Excellence in Science Books. The annual award, established in 2005, recognizes books for young readers that encourage an understanding and appreciation of science.

This year’s winners feature compelling mysteries and exquisite artwork, and for the first time include a book written and illustrated by the same person: