The earth's greenhouse effect has been intensifying since the latter part of the nineteenth century, largely as a result of human activities. The increased use of fossil fuels has raised the level of CO2 in the atmosphere, and the destruction of natural vegetation has prevented the environment from restoring the balance. Levels of other greenhouse gases—including CH4, N2O and the CFCs—have also been rising and the net result has been a gradual global warming. If present trends continue, a rise in mean global temperatures of 1.5°C-4.5°C is projected by the early part of the twenty-first century. These values are not accepted by all scientists studying the situation, but there is enough evidence to suggest that a major global climate change is in progress. The ultimate magnitude of the change is uncertain, but it has the potential to cause large-scale alterations to the natural environment and to global socio-economic and political systems. For these reasons, the search for a better understanding of the situation is being given priority, both nationally and internationally. There has always been a high degree of cooperation among the world's environmental scientists, but it seems likely that such cooperation will have to extend to other physical scientists, social scientists and decision-makers, if society is to be in the best possible position to cope with what could well be the greatest global temperature rise in history.

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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