Trilobites: Things Looked Bleak Until These Birds Rapidly Evolved Bigger Beaks

Scientists thought that invasive large snails spelled doom for endangered North American snail kites, until some of the birds started eating them.

Trilobites: The Dirty Secrets Saved in Dead Birds’ Feathers

The feathers of birds preserved in natural history museum collections record changes to historical air quality across America’s Rust Belt, a new study finds.