Positive and Negative Feedbacks in Glacial Periods
Each glacial period is subject to positive feedback which makes it more severe and negative feedback which mitigates and (in all cases so far) eventually ends it.
Read more about this topic: Ice Age
Famous quotes containing the words positive, negative and/or periods:
“The oaks, how subtle and marine!
Bearded, and all the layered light
Above them swims; and thus the scene,
Recessed, awaits the positive night.”
—Robert Penn Warren (1905–1989)
“Our role is to support anything positive in black life and destroy anything negative that touches it. You have no other reason for being. I don’t understand art for art’s sake. Art is the guts of the people.”
—Elma Lewis (b. 1921)
“It is noticed, that the consideration of the great periods and spaces of astronomy induces a dignity of mind, and an indifference to death.”
—Ralph Waldo Emerson (1803–1882)