Earth
See also: Runaway climate changeEarth's climate has swung repeatedly between warm periods and ice ages during its history. In the current climate the gain of the positive feedback effect from increased atmospheric water vapor is well below that which is required to boil away the oceans. Climate scientist John Houghton has written that " is no possibility of runaway greenhouse conditions occurring on the Earth". However, climatologist James Hansen disagrees. In his Storms of My Grandchildren he says that burning coal and mining shale oil will result in runaway greenhouse on Earth.
Benton and Twitchett's have a different definition of a runaway greenhouse; events meeting this definition have been suggested as a cause for the Paleocene-Eocene Thermal Maximum and the great dying.
Read more about this topic: Runaway Greenhouse Effect
Famous quotes containing the word earth:
“This idoll which you terme Virginitie,
Is neither essence subject to the eie,
No, nor to any one exterior sence,
Nor hath it any place of residence,
Nor is’t of earth or mold celestiall,
Or capable of any forme at all.”
—Christopher Marlowe (1564–1593)
“Poetry is the language in which man explores his own amazement ... says heaven and earth in one word ... speaks of himself and his predicament as though for the first time. It has the virtue of being able to say twice as much as prose in half the time, and the drawback, if you do not give it your full attention, of seeming to say half as much in twice the time.”
—Christopher Fry (b. 1907)
“If we consider the superiority of the human species, the size of its brain, its powers of thinking, language and organization, we can say this: were there the slightest possibility that another rival or superior species might appear, on earth or elsewhere, man would use every means at his disposal to destroy it.”
—Jean Baudrillard (b. 1929)