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:
“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)
“I held a bayonet
that was for the earth of your stomach.
The belly button singing its puzzle.
The intestines winding like the alpine roads.
It was made to enter you
as you have entered me....”
—Anne Sexton (1928–1974)
“The earth yields up her stores, of every ill
The instigators; iron, foe to man,
And gold, than iron deadlier.”
—Ovid (Publius Ovidius Naso)