back to the future locomotive

The practical options for energy range from the standard fuels, natural gas, petroleum (or oil), and coal. Fossil fuels are referred to as nonrenewable energy sources because, once used, they are gone. Scientists are exploring the practicality of other sources called renewable energizes. These include sun, wind, geothermal, water, and biomass. The renewable power resources are very important in long range energy planning simply because they will not be depleted. French Spiderman Alain Robert has finished his latest climbing the tallest building in the world. Alain has successfully reached the top from the tapered spire over the 160th floor of the building. The 47-year-old is known for climbing buildings all over the world just using bare hands and climbing shoes.