Scientists tackle this mystery: Why do mountains rise but never get any taller?
DNA detectives trace the bacteria that caused the Irish Potato Famine back to 16th century South America.
Though exaggerated in Hollywood creature features, anacondas are monstrous!
Does brain size or brain-to-body ratio affect intelligence? Not as much as you'd think.
People who suffer from Body Dysmorphic Disorder have a distorted sense of self and perceive a terrible defect in their appearance.
Pingos are icy mounds that grow upwards from permafrost under the soil.
Insects need water to survive and use varied methods to quench their thirst.
Siberian jays can suss out relatives they've never met, and can sense how closely related they are to these unfamiliar birds.
Capuchin monkeys punish fellow chimps for taking more than their fair share.
Over the course of human civilization, men have evolved more feminine traits.