Evolutionary Biology

Modern genomes and ancient mummies offer clues to why the life span of Homo sapiens far exceeds that of other primates

The key indicator for animals may be total energy expended over a lifetime

People in their late 90s or older are often fitter than those 20 years younger. Traditional views of aging may need rethinking

Stress alone does not explain the longevity gap

As we grow old, our cells begin to betray us

This weird adaptation may have helped cichlids evolve their spectacular diversity of forms

Researchers have uncovered an ancient mechanism that retards aging. Drugs that tweaked it could well postpone cancer, diabetes and other diseases of old age

We would look a lot different if evolution had designed the human body to work well for a century or more

How do you transport two young orangutans to a zoo thousands of kilometers away from their native lands? Here's the simple answer: FedEx. Here's the less simple answer: It's a lot of work.

The delta smelt (Hypomesus transpacificus) may be all but extinct in the wild, but it turns out that hope is not quite lost for this controversial California fish.

An unassuming little fern has left scientists scratching their heads at the feat of reproductive hijinks it apparently represents. The fern, xCystocarpium roskamianum(the prefix ‘x’ indicates it is a hybrid), collected in the French Pyrenees, appeared to be a blend of two ferns they know well.

A hungry polar bear (Ursus maritimus) will eat just about anything. Oh sure, they prefer to dine on nice fatty seals (I mean, what Arctic creature wouldn't?), but when push comes to shove they'll eat caribou, walruses, nuts, birds, and even stinky, rotten whale carcasses.