部分大气层正在下沉
Greenhouse gas emissions have two seemingly contradictory consequences. On the one hand, they contribute to global warming on...
Reasons for climate variation
What causes climate to vary? Solar radiation is distributed unevenly across the Earth’s surface. Low latitudes (around the...
海洋是放射性废料垃圾桶
The Atlantic Ocean is polluted, with some 200,000 drums of radioactive waste dumped between 1950 and 1990 and...
斯里兰卡亚洲象遭受的苦难
On the island of Sri Lanka, elephants are deprived of their natural environment and they have no choice...
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