Related topics: species · mammals

Oxygen shaped the evolution of the eye

Convergent origins of new mechanisms to supply oxygen to the retina were directly linked to concurrent enhancements in the functional anatomy of the eye.

Untangling the branches in the mammal tree of life

The mammal tree of life is a real leaner. Some branches are weighed down with thousands of species—we're looking at you, rodents and bats—while others hold just a few species.

Extinction of ice age giants likely drove surviving animals apart

As the world grapples with an extinction crisis, our large mammals are among the most endangered. These threatened species—rhinos, pandas, tigers, polar bears and the like—greatly influence their ecosystems. So what will ...

Bats don't rely on gut bacteria the way humans do

Right now, there are trillions of bacteria living in your gut, making up about one percent of your body weight. They're supposed to be there—we need them to help us digest food and fight off diseases. The same is true for ...

Saving Australia's sea lion population

A world-first trial is under way to treat the Australian sea lion with a topical anti-parasitic in an attempt to rid the endangered species of debilitating hookworm infestation. The experiment is led by Dr. Rachael Gray, ...

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