Inspecting a bone from a salmon's ear can reveal where it has lived.
In whales -- and in humans -- older females seem to offer a special benefit to groups.
Traffic scientists study ants because they manage traffic better than humans.
The color-shifting displays prevalent in nature could puzzle potential predators.
More evidence that members of the tyrannosaur family fought and ate each other.
Shocking ploy helps spiders catch prey.
Northern gannets avoid buckling their necks by choosing the right diving speed.
Hungry hippos heft grass from African savannahs to rivers.
Winners of insects' territorial contests have brighter UV-reflecting wing patches.
Organic farming techniques don't increase milk's nutritional value.