Rediscovery of the 'extinct' Pinatubo volcano mouse

In June 1991, Mount Pinatubo, a volcanic peak on the Philippine Island of Luzon, literally blew its top. It was the second-most powerful volcanic eruption of the 20th century, ten times stronger than Mount Saint Helens, and ...

Penis bones, echolocation calls, and genes reveal new kinds of bats

If you've ever seen a bat flying around at sunset, chances are good it was a vesper bat. They're the biggest bat family, made up of 500 species, found on every continent except Antarctica. And most of them look a lot alike—they're ...

Using math to examine the sex differences in dinosaurs

Male lions typically have manes. Male peacocks have six-foot-long tail feathers. Female eagles and hawks can be about 30% bigger than males. But if you only had these animals' fossils to go off of, it would be hard to confidently ...

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