Wind is such a powerful force of nature, it can blow away even the strongest of man made structures. You can even harness it's power to make electricity. Although we know the effects of wind, we can't actually see it or contain it in the palm of our hands. Despite this you know it is there as you can feel it fill your lungs as you breath and as it brushes your skin when it moves. To help us understand better the effects of wind, here's a simple experiment using paper wind mills that is both fun and insightful.
