5.0-magnitude earthquake occurs in Andaman Sea
Urumqi top of polluted cities list
Black rhino killed by poachers in Kenya sanctuary
Eight lions, 25 elephants killed outside Tanzania sanctuary
Dinosaurs in decline long before asteroid impact: study
Ecuador earthquake death toll soars to 413: gov't
Xinjiang city tops China's Q1 smog list
Pollution poses threat to cities' water
Exotic species add pressure at border
Rainstorm kills 6 in central China
