"In a few decades, unless we return to savagery, the world demand for many non-renewable resources will be twice or thrice that of today," said Kirtley F. Mather, professor of Geology, in a broadcast given on Saturday afternoon sponsored by the Guardian.
There is no prospect of imminent exhaustion of non-renewable resources unless our need for them increases greatly, he said. However, these supplies cannot last far into the future.
Professor Mather saw no cause for alarm in this statement, for substitutes are being continually found to supplant these resources. We are also trying to use less of our mineral resources, and more of our permanent natural resources, such as wind and water power.
One of the most important problems Mather, is that of using our non-renewable resources intelligently.