Richmonders react to sub-freezing temperatures: 'I can't do anything at all'
Richmond was in the midst of a nearly 70-hour stretch of below-freezing temperatures Tuesday, one of many regions facing ...
来自MSN12 分钟
China's 'artificial sun' shatters nuclear fusion record by generating steady loop of plasma ...
A nuclear fusion reactor in China, dubbed the "artificial sun," has broken its own record to bring humanity one step closer ...