东亚冬季风是北半球冬季冷空气向南输送的最主要通道，东亚冬季气温较同纬度其它地区偏低，若伴随降雨过程，往往造成严重的低温冰冻雨雪灾害。已有研究表明，东亚冬季降水年际变化主要受热带太平洋和热带印度洋海表面温度（SST）变化影响，并且已经揭示了几条不同的遥 ...

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

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