The high mountain water source for millions of people in South America is now in question.

Foreign interests are involved in a hydro-electric project in the highlands of Guatemala. Indigenous people of the region have risen up against it, pitting them against a government with a history of violence.

A new U.S. report predicts that increasing water scarcity and other water-related problems could trigger conflicts between countries and lead to the failure of states in the coming decades.

Dr Elena Litchman will lead researchers to study adaptations organisms show in the changing environment of Lake Baikal.

It is time of the annual migration as elephants seek water and find none. Death on the savanna.