Those views led to similarly strong opinions on climate change, which he expressed in a 1973 book, “Energy: The New Era.” At the time, he wrote, scientists were not yet certain that climate change was a path toward disaster, but the issue was urgent:“We can only be certain that man is tampering ignorantly and perhaps dangerously with the planet’s environment in a very fundamental way. And if we find that excessive fuel consumption is causing threatening changes in climate, the lead time for reducing fuel consumption to ward off the threat will be quite short.”

Source: New York Times May 17, 2020 21:33 UTC