This Week: Reading magma, predicting giant eruptions
In the News: Bus-size asteroid misses Earth by 37k miles!
It depends on the kind of lifestyle those people enjoy, says Lisa Naughton, a UW-Madison professor of geography and environmental studies. The late 18th century English economist Thomas Malthus – one of the first to express concern about overpopulation – observed that there should be no more people in a country than can “daily enjoy [...]