Children have a wonderful ability to focus their parents' attention on the essentials. Before our twin sons were born in 1987, I had often heard about all the environmental problems projected to come to a head toward the middle of this century. But I was born in 1937, so I would surely be dead before 2050. Hence I couldn't think of 2050 as a real date, and I couldn't grasp that the environmental risks were real.
After the birth of our kids, my wife and I proceeded to obsess about the things most parents obsess about--schools, our wills, life insurance. Then...
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