科学美国人60秒:浅色昆虫适合温暖气候-托福听力下载

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　　科学美国人60秒中英文翻译：浅色昆虫适合温暖气候

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　　For insects in Europe, climate change has led to habitat change.

　　In the past couple of decades, for example, Mediterranean butterfly and dragonfly species have been found flying around places previously off limits to them—new new northern climes such as Germany.

　　Now a study in Nature Communications finds a colorful reason for the northern expansion.

　　气候变化.jpg

　　As northern Europe warms, the light-colored butterflies and dragonflies typically found in the Mediterranean find themselves able to survive in the newly warmer north, and to even outcompete their darker-colored rivals.

　　Lighter colors reflect sunlight while dark colors absorb it and heat up.

　　Hence chocolate ice cream melts in the sun faster than vanilla.

　　Lighter-colored insects thus function well in warmer climates.

　　They don't overheat as easily and can stay active longer, giving them a leg up—well, six legs up—in our warming world.

　　The researchers say this migration of insects shows that climate change isn't something that's coming—it's already happening.

　　And it could drastically affect which insects up end up where.

　　Which will in turn affect us.

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