SciShow: A History of Earth's Climate

Is variability in the Earth's climate something new or has the climate always been changing? And, is it something that we should be concerned about?

In this week's Sci Show, Hank goes through a history of Earth's climate and finds a variety of factors that have influenced climate over time.

"Temperatures are increasing faster than they ever have. In the past 100 years, temperatures have risen so dramatically that thay have cancelled out all of the cooling that took place over the past 6,000 years."

via Green Living - Building, Home, Auto & Lifestyles copy http://feedproxy.google.com/~r/EcoGeek/~3/W2gA3gkuXys/3864-scishow-a-history-of-earths-climate