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 ...

How did the extinction of saber-toothed cats impact other mammals?

When saber-toothed cats and mammoths roamed North America, they dominated their environments. After they went extinct during the end of the last ice age, their absence fundamentally altered interactions between smaller surviving ...

Marine life is disappearing, imperiling San Diego's future

Just as scientists are starting to understand the life forms and landscape of the ocean, they are also coming to grips with the threat of mass extinctions, speakers said at a marine biodiversity forum last week.

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