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

极端海王星外天体的特别之处，一方面在于其轨道的距离跨度极大，呈一个极扁的椭圆形。以塞德娜为例，它的近日点为76 AU，远日点则为约936 ...

Scientists researching Alpine glaciers store ice in Antarctica. By analysing air bubbles in the ice they may be able to predict the future ...

Chinese Premier Wen Jiabao pledged on Friday at a press conference that China is capable of launching a new stimulus package "at any time". Premier Wen Jiabao said on March 13 it is "difficult ...