人类灭绝的10种可能 特朗普入围

Climate change
气候变化

Concentrations of carbon dioxide, released when fossil fuels are burned, as well as other 'greenhouse gases', have risen at an alarming rate, forming a thick blanket around Earth, trapping excess heat and nudging global temperatures upwards.
化石燃料燃烧释放的二氧化碳以及其他“温室气体”的浓度以惊人的速度增加，厚厚地笼罩在地球周围、吸收多余热量、导致全球气温上升。

Scientists warn of a tipping point - a temperature beyond which the problem can no longer be dialled back.
科学家们提醒，温度超过某个临界点问题将无法挽回。

If we reach this point, a runaway greenhouse effect would cause temperatures to soar to several hundred degrees Celsius, boiling the oceans and making life on Earth impossible.
如果气温一旦达到了这个临界点，那么失控的温室效应将会使气温飙升到几百摄氏度，让海水沸腾，地球上将无法生存。

However the CESR rates climate change as another low to medium risk priority.
不过，CESR也将气候变化的风险等级列为中低等。