The level of carbon dioxide in the atmosphere today is likely higher than it has been anytime in the past 3 million years. This rise in the level of carbon dioxide, a greenhouse gas, could bring ...

THE separation of the Quaternary period from the Recent period, which begins with the Neolithic, is attributable to the fact that an interruption was supposed to have occurred in Man's occupation of ...

Last week I wrote a post about some new research that suggests that global warming could trigger large-scale extinctions in the next few decades. In particular, I dissected some of the objections that ...

How did the world's largest sand island K'gari, the indigenous name for eastern Australia's Fraser Island, along with the Great Barrier Reef, the world's largest coral reef, come to be? Little is ...

IN Dr. Wright's interesting review of “Les Grottes de Grimaldi,” by M. L. de Villeneuve (NATURE, October 10, p. 590), I find the following:—“M. Rivière attributed them [the deposits] to the Quaternary ...