A Science Lesson In Solar Energy (And How It Affects Global Warming)

Here is a wonderful science lesson about the Sun, the Earth, changes of seasons, and global warming....
Peter


http://www.youtube.com/watch?v=taHTA7S_JGk&feature=related

and another version.......funny how man's activities, such as burning of fossil fuels are not mentioned...
http://www.youtube.com/watch?v=DuiQvPLWziQ&NR=1