Several times in Earth's history, rapid global warming occurred, apparently spurred by amplifying feedbacks. In each case, more than half of plant and animal species became extinct. New species came into being over tens and hundreds of thousands of years. But these are time scales and generations that we cannot imagine.
タグ: animal, plant, time, history

"James Hansen"の他の名言

Tipping points are so dangerous because if you pass them, the climate is out of humanity's control: if an ice sheet disintegrates and starts to slide into the ocean there's nothing we can do about that.
タグ: nothing, humanity, ocean, you
As a government employee, you can't testify against the government.
タグ: employee, against, government, you
I was lucky to grow up at a time when it was not difficult for the child of a tenant farmer to make his way to the state university.
タグ: way, farmer, grow, time
Being at NASA and having the access to both computing capability and satellite observation capability is kind of the ideal research situation to try to understand global climate change.
タグ: being, research, climate-change, change
Global warming isn't a prediction. It is happening.
タグ: happening, global, global-warming
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