A once-mighty U.S. river is drying up far faster than climate models predicted, threatening ecosystems, agriculture, and water supplies for millions—experts warn urgent action is needed now. [disappea ...

Ancient migration between wild horse populations in America and Asia show how ecosystems adapt to survive cataclysmic change ...

A team led by Prof. Zheng Tianlu and Prof. Wei Jiang from the University of Science and Technology of China (USTC), has ...

Supreme Court Wrestles With Judges’ Power to Freeze Government Actions Nationwide The Supreme Court heard arguments in a case with potentially major implications for the power of federal judges ...

PHILADELPHIA (WPVI) -- A round of storms is expected to move through between 8am and Noon Friday. THURSDAY: Mostly cloudy and muggy with areas of fog, low 64.. FRIDAY: A complex of storms and ...