Dolphins, like humans, experience age-related changes, including reduced energy, wear to the skin, slower movement and fading eyesight. But scientists said they also have access to a powerful, natural ...

导语：亚洲多地在11月下旬遭遇强风暴与洪涝灾害，恶劣天气已造成大量伤亡，并迫使大量民众离开家园。联合国政府间气候变化专门委员会（IPCC）的一份评估报告预测，随着气温上升，南亚和东南亚将面临更多强降雨，季风地区发生洪水的频率将“大幅增加”。

NOUAKCHOTT, Dec. 14 (Xinhua) -- Officials and experts from China and Africa on Sunday called for stronger scientific and technological cooperation to address desertification and land degradation, ...