The density of fine hairs on bumblebees’ tongues determines how much nectar they can collect — and workers put queen bees to shame.

Black-bulb yam’s mimicry tricks birds into spreading its berrylike clones. The plant's novel strategy helps it spread without seeds or sexual reproduction.

In humans, teens do the most dangerous things. In chimpanzees, that honor goes to toddlers. The difference may lie in caregiver supervision.

The elm zigzag sawfly has spread to 15 states in five years. Now it's attacking the tree that cities planted to replace Dutch elm disease victims.

Among the first finds from the Vera C. Rubin Observatory, the discovery hints at a population of exceptionally strong asteroids.