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:
““Christ, the Lord is ris’n to Day,”
Sons of Men and Angels say,
Raise your Joys and Triumphs high,
Sing ye Heav’ns, and Earth reply.”
—Charles Wesley (1707–1788)
“Since man’s highest mission on earth is to spiritualize everything, it is his excrement in particular that needs it most.”
—Salvador Dali (1904–1989)
“To say nothing is out here is incorrect; to say the desert is stingy with everything except space and light, stone and earth is closer to the truth.”
—William Least Heat Moon [William Trogdon] (b. 1939)