The Future of Fuel

It's predicted that in 40 years, the world's supply of oil will run out. My hypothesis is that we need to spend more energy on creating renewable energy sources. If our reliance on oil continues to increase, than it may be too late. I'm trying to get everyone to agree to a personal contract. The contract states that everyone will do their part to become more eco-friendly. I'm sure you've heard that before, but if we keep pushing it off like it's no big deal, it will be too late. I belive that the future of energy will be created from solar, hydro, wind, and nuclear power. Solar power has the greatest potential, and that may very well be the future of energy. Within the next 50 years, renewable energy will be the source of our energy. If it isn't, mankind will change forever due to wars and greed.