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:
“There is not much sense in suffering, since drugs can be given for pain, itching, and other discomforts. The belief has long died that suffering here on earth will be rewarded in heaven. Suffering has lost its meaning.”
—Elisabeth Kübler-Ross (b. 1926)
“We therefore commit his body to the ground; earth to earth, ashes to ashes, dust to dust; in sure and certain hope of the Resurrection.”
—The Burial Service, Book of Common Prayer (1662)
“Surely, of all creatures we eat, we are most brutal to snails. Helix optera is dug out of the earth where he has been peacefully enjoying his summer sleep, cracked like an egg, and eaten raw, presumably alive. Or boiled in oil. Or roasted in the hot ashes of a wood fire.... If God is a snail, Bosch’s depictions of Hell are going to look like a vicarage tea-party.”
—Angela Carter (1940–1992)