适逢元宵佳节，一列满载浪漫与期待的雪山观光火车在云南丽江首次鸣响汽笛，正式驶入玉龙雪山的壮丽画卷。这辆从雪山开来的列车，由广州地铁跨省“运营”！The Lijiang Snow Mountain Sightseeing Train, operated ...

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