The most agile hummingbirds owe their nimbleness to muscle strength and power, as well as wing shape and size, according to a new study in the February 9 issue of Science.

This Spotlight on Science Writers focuses on Susan L. Roth and Cindy Trumbore, the authors of Parrots over Puerto Rico.

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

Call him “Neutron Bob” or even “Bob the Science Slob” and he won’t mind. Those are just a few of the nicknames Bob Hirshon has adopted during his appearances on the “Absolutely Mindy” radio show.

Once a month, Hirshon, senior project director for media programs at AAAS, appears as the science expert on the kids’ radio program. Mindy Thomas hosts the segment, which is a part of the “Kid’s Place Live” channel on SiriusXM Satellite Radio. Hirshon and Mindy talk about the latest scientific developments and answer kids’ science questions.