If some individuals contribute to general social deterioration by overproducing children, and if the need is compelling, they can be required by law to exercise reproductive responsibility — just as they can be required to exercise responsibility in their resource-consumption patterns — providing they are not denied equal protection

There exists ample authority under which population growth could be regulated...It has been concluded that compulsory population-control laws, even including laws requiring compulsory abortion, could be sustained under the existing Constitution if the population crisis became sufficiently severe to endanger the society.

The e-mails are mainly about a controversy over a particular data set and the ways a particular small group of scientists have displayed that dataset.

If some individuals contribute to general social deterioration by overproducing children, and if the need is compelling, they can be required by law to exercise reproductive responsibility — just as they can be required to exercise responsibility in their resource-consumption patterns — providing they are not denied equal protection

A massive campaign must be launched to de-develop the United States… [we] must design a stable, low-consumption economy.

We are not, of course, optimistic about our chances of success. Some form of ecocatastrophe, if not thermonuclear war, seems almost certain to overtake us before the end of the century. (The inability to forecast exactly which one - whether plague, famine, the poisoning of the oceans, drastic climatic change, or some disaster entirely unforeseen - is hardly grounds for complacency.)

A program of sterilizing women after their second or third child, despite the relatively greater difficulty of the operation than vasectomy, might be easier to implement than trying to sterilize men.