China's planned $137 billion Medog dam on the Yarlung Tsangpo poses ecological, seismic, and strategic risks for India and ...

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...

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Scientists are zeroing in on two little lakes in the Cape to figure out how to save them from climate change, or if they ...

Others are more precise with their definitions. Some say that “high speed” starts at 125 mph. But others say those trains are ...