Green transportation

The transport of people and freight accounts for at least 14 percent of global greenhouse gas emissions. This figure is increasing, especially in many developing nations. Technology may help through the development of more efficient vehicles, powered by less polluting fuels. But most of the more exciting proposals are still at the design stage, and some may not work in practice. So in the short term, the best way to reduce greenhouse gas emissions from transportation is to change the way we travel, and not travel so much.

Battery

Fuel tank

Generator/starter

Gas engine

Fuel tank

Generator/starter

Gas engine

Hybrid car

Electric \ Power split motor unit

Hybrid car

Electric \ Power split motor unit

ELECTRIC CARS AND HYBRIDS

Electric cars are less polluting than normal cars, but they cannot travel far and take a long time to recharge. One solution is the hybrid, which has a small engine linked to a generator that charges a battery. This drives an electric motor that can boost the power of the engine through a"power split" device. Since the electrical power is used only when needed, the car produces less carbon dioxide than conventional cars.

Strong frame forms safety cage

CAR DESIGN

Car engines are more efficient than they used to be, and produce fewer greenhouse gases in relation to their power. But most cars are much heavier and faster than they were before, so they need bigger, more powerful engines that use more fuel. Many manufacturers are fighting the trend by producing small, lightweight vehicles like the Smart Car shown above. These produce far fewer greenhouse gases, because they can be powered by small engines.

Lightweight materials reduce

Container holds used cooking oil from restaurants

RECYCLED FUELS

Most cars run on fossil fuels, but they can also use renewable fuels made from plants. Gasoline engines can burn a small percentage of ethanol, an alcohol made from plant material, and diesel engines can use "biodiesel"made from crops such as sunflowers or soya. Growing crops to make fuel can do more harm than good, but diesel engines can be modified to use recycled cooking oil, which would otherwise be thrown away. The oil can be cleaned up using a home refinery like this.

Lightweight materials reduce

Guide to Alternative Fuels

Guide to Alternative Fuels

Your Alternative Fuel Solution for Saving Money, Reducing Oil Dependency, and Helping the Planet. Ethanol is an alternative to gasoline. The use of ethanol has been demonstrated to reduce greenhouse emissions slightly as compared to gasoline. Through this ebook, you are going to learn what you will need to know why choosing an alternative fuel may benefit you and your future.

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