人类对气候影响的信号已经从自然变化的噪音中显现出来。
Innovation is the key to sustainable development.
The boundary between physics and mathematics is not as clear-cut as one might think.
It's time for a show down! You and me!
我不是女权主义者。我向男人致敬,我爱男人。我赞美美国男性文化,啤酒,酒吧和肌肉车...