Most independent estimates put the one-time hit to EU GDP at between 0.3 and 0.5 percentage points, with Germany bearing the brunt, while France and Italy are expected to experience a more limited ...

JERUSALEM, July 30 (Xinhua) -- Israeli researchers created a low-cost method using ordinary video cameras to monitor plant health in 3D, the Hebrew University of Jerusalem said Wednesday in a ...

可控核聚变应该是最值得期待的能量来源。它所需的氘、氚等原料很容易获取，聚变过程不产生二氧化碳等温室气体和长时间放射性废物。如果真能实现，将一劳永逸地解决人类的能源问题。