... the to create electricity. They had no turbines, generators or power lines. These days, we do have those things. The basic idea behind a hydroelectric dam is to stop water and limit the flow of a river. This is accomplished more or less by a big wall. The wall contains a hole in the middle, called an intake hole or valve. The intake is regulated ... dams is erosion. Through a rivers" natural course, it will pick up sediment and deposit the solid material as the speed of the river decreases. As a general rule, a river at a given speed can only carry X amount of sediment. As a river appro...

• Word Count: 881
• Approx Pages: 4
• Grade Level: High School

... is the most environmentally harmful. Most conventional sources of fuel are now being depleted, which means that soon we will be relying on the unconventional, environmentally taxing sources. A way to limit the environmental impact of projects like the pipeline would be to implement a pollution charge or tax on any negative environmental problems that TransCanada creates. But even if the project itself ... could be a useful way of making people think twice about driving and buying gas guzzling cars. We should also shift our focus to public transportation such as the California high speed...

• Word Count: 1250
• Approx Pages: 5
• Has Bibliography
• Grade Level: High School

... that there is considerably more carbon in existing fossil fuel reserves than we can safely burn. In recent years, the world has made a global agreement recognizing that the absolute upper limit for 'safe' levels of global warming is 2 Degrees Celsius. He says 2°C of warming, the maximum is "the bottomist of bottom lines." McKibben tells us the problem here ... claims "At this point, effective action would require actually keeping most of the carbon the fossil-fuel industry wants to burn safely in the soil, not just changing slightly the speed at which it's burned." A few year ago ...

• Word Count: 787
• Approx Pages: 3
• Grade Level: High School

Scientists report that global warming has been escalating since the Industrial Revolution. Governments are trying to reduce carbon-dioxide emissions. With the speed of destruction of Earths ecosystem, the survival of many species, including human beings, is threatened. In order to solve this danger, we have to reduce the consumption of energy and ... the above arguments, I mentioned some solutions for industrialized countries. This is because we are already saturated with food and other appliances. It would be difficult to enforce developing countries to limit the use of fossil fuels because...

• Word Count: 600
• Approx Pages: 2
• Grade Level: High School

Scientists report that global warming has been escalating since the Industrial Revolution. Governments are trying to reduce carbon-dioxide emissions. With the speed of destruction of Earths ecosystem, the survival of many species, including human beings, is threatened. In order to solve this danger, we have to reduce the consumption of energy and ... the above arguments, I mentioned some solutions for industrialized countries. This is because we are already saturated with food and other appliances. It would be difficult to enforce developing countries to limit the use of fossil fuels because...

• Word Count: 608
• Approx Pages: 2
• Grade Level: High School