Tag: body size

Climate change has likely caused migratory birds’ bodies to get smaller and their wings to get longer over the years, and the timing of their migrations has shifted substantially. Researchers...

When humans reached North America 13,000 years ago, 78 species that weighed over a ton vanished in the terminal Pleistocene megafauna extinction. After scrutinizing the fossil record, a team of...

Consider two common patterns in nature. The bigger the animal, the fewer the individuals. That’s Damuth’s law. And land mammals tend to evolve toward bigger body sizes. That’s Cope’s rule....

It’s easy to see that frogs are in trouble when their breeding ponds are littered with carcasses. But even in places with no visible die-offs, the fungal disease that is...