资讯

The collapse of the world’s second-largest ice sheet would drown cities worldwide. Is that ice more vulnerable than we know?
From a distance they look almost like ordinary sailboats, their sails emblazoned with the red-and-white flag of Denmark . But these 10-meter (30-foot) -long vessels carry no crew and are designed for ...
Theoretical calculations and nitrogen adsorption analysis results demonstrated that aggregation of CNTs led to a significant reduction in surface area (especially for the SWNTs), but a significant ...
Researchers have confirmed the existence of a new island in the northern part of the Caspian Sea, but they haven't managed to ...