Another technology, Concentrated Solar Power (CSP), takes a different approach to harnessing the power of the sun. Unlike photovoltaic cells, CSP uses mirrors to concentrate the sunlight on a focal point, which magnifies the suns heat. Similar to holding a magnifying glass in the sun, focusing the light onto a piece of paper until the paper catches on fire.Add a comment
The most direct way to reduce our dependency on foreign oil is to simply use less of it, starting with the cars and trucks we drive. Nearly 70 percent of our oil use is for transportation, and more than 65 percent of that amount is for personal vehicles...energy independence means changing how we power our cars and trucks from foreign oil to new American-made fuels and batteries.
“We will continue to need high-energy-density fuels for years to come. But we can develop new liquid biofuels that will be direct replacements for gasoline and diesel fuel. These will be next-generation biofuels made from high-energy grasses such as miscanthus and from agricultural wastes. In 2005 the Oak Ridge National Laboratory outlined an achievable strategy (known as the "Billion Ton" study) for using biomass to replace 30 percent of our transportation fuels, and the science has advanced since then. When we have new biofuels that can be blended at any level with gasoline and that are safe for both engines and the environment, the importance of oil as a strategic resource will plummet.” ~ Nobel physicist Steven Chu, U.S. Secretary of Energy
Every day, 365 days per year, the earth is warmed by the power of the sun—the amount of solar thermal energy absorbed by the earth’s oceans in a single day is greater than the total thermal energy that could be produced by burning all of the oil that exists in the Middle East. The amount of energy that enters the earth’s atmosphere every year through solar radiation is greater than the total energy locked within all of the oil and coal that can be found on earth.Add a comment
America has more Sugar than the Middle East has oil. How can this be?
When people are asked where sugar comes from they will most likely answer: sugar cane or sugar beets, because that is what most people are familiar with. Yet, sugar is the basic molecular building block within all plant life on Earth. Carbohydrates are made of sugar molecules. All plants, including trees and grasses are made of carbohydrates, combined with lignin and a small percentage of oils and proteins (although some plants and vegetables are known for their high percentage of oil or protein, they are the exception).Add a comment