几位资深科学家现在表示，这个断言不切实际，大喜马拉雅山冰川不可能在几十年内融化。
Several senior scientistshave now said the claim was unrealistic and that the large Himalayanglaciers could not melt in a few decades.
他以及其他科学家表示，现在主要有两种替代化石燃料的选择，即用可再生能源产生能量或采用核能。
He and other scientists say there are basically two options to replacing fossil fuels, generating energy with renewables, or embracing nuclear power.
在一项研究中，来自美国和丹麦的科学家表示，世界各地的人们现在每月使用1290亿个口罩。
In a study, scientists from the US and Denmark said that people around the world are now using 129 billion face masks every month.
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