A decade ago, the world’s heaviest pumpkin weighed 2,000 pounds. Now the 3,000-pound mark is within sight.

Within hours of hatching, these baby birds can learn concepts like “same” or “different”—and they do so faster than human infants.

Our microbiomes winnowed when we swapped hunting and gathering for cities—and a few months in a zoo will do the same to a monkey.

Scientists solved a longstanding mystery about the sweetness of nectar that likely applies to humans too.

A highly lethal disease that controlled Australia’s rabbit problem initially evolved to be milder—but has since rebounded into a newly nasty form.