Science: Pay Dirt from the Moon

Pay Dirt from the Moon The crew of Apollo 11, the first men on the moon, brought back only 481 Ibs. of lunar rocks and dust. But even that small sampling from the Sea of Tranquillity has been enough to keep 142 scientists in the U.S., Canada, Japan, Australia and Western Europe fully occupied in their laboratories since late last summer. In Houston last week, at a symposium sponsored by NASA, the lunar investigators finally took time out from their work to report on what they had learned so far. Their...