Every time a Burmese python swallows a meal, something remarkable happens inside its body. Its heart expands by a quarter.

A new study explores how the extreme biology of pythons may point to an unexpected path for obesity research. Pythons don’t nibble. They chomp, squeeze, and swallow their prey whole in a meal that can ...

In a new episode of Popular Science’s Ask Us Anything podcast, we dig into the fossil record to see just how likely a venomous dinosaur would’ve been. Sarah Durn: It’s one of the most memorable scenes ...