Quotes About Glaciation

We know that in the depth of the last glaciation carbon dioxide fell to 180 ppm, rose to 280 ppm after the ice age ended, and has risen now to 380 ppm as a result of our pollution.

the ice-cap had spread from centres near Hudson Bay to enshroud all of eastern Canada, New England and much of the Midwest down to the 37th parallel – well to the south of Cincinnati in the Mississippi Valley and more than halfway to the equator.41

The fact is, we are still very much in an ice age; it's just a somewhat shrunken one—though less shrunken than many people realize. At the height of the last period of glaciation, around twenty thousand years ago, about 30 percent of the Earth's land surface was under ice.

we are still in the warming-up stage following the last Pleistocene glaciation—that the world's climate, over the next thousands of years, will grow considerably warmer before beginning a downward swing into another Ice Age. But what we are experiencing now is perhaps