Take a journey to the heart of Africa's Great Rift Valley, where lions, hippos, and crocodiles live in relative harmony until an unusual climatic cycle turns the natural dry season into the toughest ...

For a warm-blooded animal, food is not just a luxury—it is a matter of ... The ability of animals to adapt to extreme environments is quite remarkable. Whether it is in the freezing corners of Siberia ...

This daily feast-and-famine cycle in oxygen availability created an intense physiological challenge for early animals, ...

While Texas can have some epic temperature swings and extreme weather, animals kept at zoos rely on humans to help them adapt to climate change.