正如所有fMRI显示的那样，这是人类生存的条件。

It is, as any fMRI can show you, the human condition.

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我们只有一个地球，地球给了我们生存的条件，我们也只能在地球上生存。

We have only one earth and the earth we live to the conditions, we could only survive on Earth.

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但在某些水域，如北极水域，气候变暖将使浮游植物的生存条件变得更加恶劣。

But in some waters, such as those of the Arctic, a warming will make conditions worse for phytoplankton.

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If you think about what ancient food gathering habits used to be like, you see things like this where people are out gathering food that is growing naturally, and you can think about what would-- what sort of conditions this would create and what kind of hardships it would create.

如果你想知道古代食物采集的习惯,请看这张图,人类都在野外采集自然生长的食物,你可以设想到,条件有多恶劣,生存有多艰难

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选