D. Cooperation among monkeys remains stable only in the wild.
Text 2
Do you remember all those years when scientists argued that smoking would kill us but the doubters insisted that we didn't know for sure？That the evidence was inconclusive, the science uncertain？That the antismoking lobby was out to destroy our way of life and the government should stay out of the way？Lots of Americans bought that nonsense, and over three decades, some 10 million smokers went to early graves.
There are upsetting parallels today, as scientists in one wave after another try to awaken us to the growing threat of global warming. The latest was a panel from the National Academy of Sciences, enlisted by the White House, to tell us that the Earth's atmosphere is definitely warming and that the problem is largely man-made. The clear message is that we should get moving to protect ourselves. The president of the National Academy, Bruce Alberts, added this keypoint in te preface to the panel's repor“Science never h all the answers But science does provide us with the best available guide to the future, and it is critical that out nation and the world base important policies on the best judgments that science can provide concerning the future consequences of present actions.”
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