2. Science is founded on an objective search for truth. Without objective truth, science and scientists have little value to society. Scientists who argue for alarmism, on the whole, are not very bad men but the course of action they propose is very bad indeed--for science, for scientists and for society as a whole.
2. For decades, the environmental policy has been that when there is uncertainty about a threat, it is better to be safe than sorry. When you are operating at the limits of what science knows, the big mistake would be to underestimate the real danger and leave people unprotected.