只用一本书提高英语听力能力!重温经典名著双语阅读小编推荐:跟着纪录片学英语不背单词和语法,轻松学英语
返回列表 回复 发帖

[科学美国人60秒] 【整理】SSS 2008-02-13

提高英语听力能力 找对方法很重要!
homewoke
-------------

This is Scientific American’s 60 second science. I’m Karen Hopkin. This’ll just take a minute.

Seems like every other week brings news the global warming is gonna be bad for some poor animal or other. But plants, well I guess, I was thinking the plants would welcome the heat. I mean, global warming is caused by greenhouse gases, and plants live in greehouses, so everyone's happy. Well, according to a new study, published in the Feburary 12 issued of the Proceeding of the National Academy of Sciences, I was wrong, or at least, not quite right, because plants, too, likely to face the problems as the earth heats up, and the biggest problem may be insects. Scientists were looking at the fossilized remains of the leaves that fell off tress about 15 million years ago.

At that time, plantet was undergoing a period of warming. The scientists found that the temporature rose. The leaves looked more nibbled seems with more CO2 in the atmosphere, plants take up more carbon that actualy makes their leaves less nuritious for plant-munching bugs, so the insects just eat more. So warm planet will be home to some hungry bugs which I dare say will not pleased trees or anyone else relies on plants for food, which includes, ultimately, all of us .

Thanks for the minute for Scientific Americans' 60-Second Science. I'm Karen Hopkin.
返回列表