In a changing ecosystem, Yellowstone grizzly bears are resilient

Grizzly bears in the Greater Yellowstone Ecosystem have been able to gain the body fat they need for hibernation even as population densities have increased and as climate change and human impacts have changed the availability ...

Atypical 'mad cow disease' case detected in US

US health officials have detected an atypical case of "mad cow disease" in a beef cow at a slaughter plant in the state of South Carolina, they announced Friday.

Scientists find chemical that stops locust cannibalism

Plagues of locusts that darken the skies and devastate all things that grow have been recorded since Biblical times, and today threaten the food security of millions of people across Asia and Africa.

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