Saturday, October 28, 2006

Evidence of global warming


Global warming is the observed increase in the average temperature of the Earth's atmosphere and oceans in recent decades.

The Earth's average near-surface atmospheric temperature rose 0.6 ± 0.2 °Celsius (1.1 ± 0.4 °Fahrenheit) in the 20th century. The prevailing scientific opinion on climate change is that "most of the warming observed over the last 50 years is attributable to human activities".

The increased amounts of carbon dioxide (CO2) and other greenhouse gases (GHGs) are the primary causes of the human-induced component of warming. They are released by the burning of fossil fuels, land clearing and agriculture, etc. and lead to an increase in the greenhouse effect. The first speculation that a greenhouse effect might occur was by the Swedish chemist Svante Arrhenius in 1897, although it did not become a topic of popular debate until some 90 years later.
(c) Funny Pictures

6 comments:

msquared said...

Hey,
I've added you to my links!

Mike

The Ordinary Adventures of Tomas

Lae said...

welcome!

Benny said...

can't wait until 2025!!! O.O )))))

Lae said...

hehhhhhhhh

Anonymous said...

hey I've added you to my links too

http://49th-parallel.blogspot.com/

Canada, eh?

Nelumbo said...

They'd probably get a kick out of this when I teach global warming...good opening slide...