Ideas in the making: saving energy or using it wisely

I was talking with a friend of mine today who has been going to Africa twice a year and he told me about the level of poverty there. He also stated that there are problems with keeping food.

Well, I told him about this idea called Pot in Pot which allows for a limited refrigeration in rural Africa.

But more importantly, the site called World Changing discusses many changes that are occuring that save energy. Now I'm not a environmentalist, but I am a conservationist. Why? If I can save so many gallons of fuel that means that the unknown amount of oil in the ground will last that much longer.

Hope this helps get the word out.