Good picture examples of global warming?

Question

one slide in my powerpoint presentation is "what is global warming". I wrote a description but now I want one or two pictures that describe it. Does anyone have any ideas to what pictures I should put?

Answer 1

Polar bears &/or melting ice caps to show results of Global Warming or what/who it is harming.

Answer 2

pics of the polar ice caps getting smaller by decade. and pics of the toxic gas that is being released by the melting ice.

Answer 3

Try this one:

http://www.astronomy-blog.com/images/blo...