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In recent years, we have been encouraged to take on more collective responsibility when it comes to the environment. Mankind has damaged the planet in so many ways over the centuries that it's become vitally important that we look to repair the damage we've already done.

It's become common practice to recycle as much of our household and industrial waste as possible, and every month more and more people are joining this quiet, and much-needed, revolution. Renewable energy sources, such as solar, wind and wave, are serious alternatives to fossil fuels these days, too.

The rise in the use of biofuel is perhaps not as well-known, but thanks to some intensive research and development, it is set to play a major part in the fight against environmental damage. It's likely to be a significant source of energy in the coming years, and will become something we're all aware of in the very near future.

Basically, biofuels are obtained from renewable resources, which can include plant and animal by-products. They've become more popular - and necessary, for that matter - because of the rise in oil prices and the need to find an alternative to petrol and diesel. They fall into two main categories.

The first, bioethanol, is developed mainly from sugar and starch crops. It's an alcohol, and can be used to propel vehicles. However, it's currently utilised primarily as an additive to gasoline. It helps to lower dangerous emissions, and is set to become more widely used in the more developed countries.

Biodiesel is perhaps more familiar, and will be even more so in the coming years. It's manufactured from animal fats, recycled grease and vegetable oils. Although, like bioethanol, it can be used to power vehicles, at the moment it's added to diesel in order to make it kinder to the environment.

Both biofuels have been developed as a result of major investment, and will become a credible alternative to the more damaging fuel sources we currently use. They will one day play a major role in industry and in the home, as well as on the country's roads.

More and more countries are recognising the need for implementing the use of biofuels, and many have targets to aim for which, it is hoped, will lead to major reductions in the use of fossil fuels over the coming years.

In the European Union, for example, each member state is expecting that biofuel usage will be at least 5.75% of all traffic fuel used by the year 2010. In 2020, that figure is expected to increase to 10%.

The USA offers tax exemptions for companies that develop biofuel technology, and the country has seen a significant change in attitudes over the last decade. American ethanol fuels are obtained from corn, a major crop that has been harvested for many years.

In recent times, a significant number of governments have developed major environmental programmes, reflecting a growing awareness of the need to protect our planet. Developing usable biofuels is just one of the many initiatives that are helping to make our world a greener one.

More and more governments are making major investments in biofuel technology, which in the next few years will become an increasingly important energy source.

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