Letters to the Editor

19559

It was interesting to read of processing mundane noise to produce an ultrasound image of the geology of Los Angeles. A big question in the state is the deep structure of San Francisco Bay. Clearly, the bay and the valleys extending to its northwest and southeast form a rift valley. But it’s difficult to observe […]

19558

This article seems determined to impose (not very) modern cultural views on data that do not support them. Females would have benefited from a male “bringing home food”?! To the best of our knowledge Australopithecus afarensis was a foraging species, members of all ages and both sexes eating what they found as they found it.