The issue

Date: 2015-10-07; view: 451.

By Daniel Howden in Sao Paolo

The Big Green Fuel Lie

Wave power

How it works:

· by capturing mass of kinetic energy created by waves

· building dams or pipes for the water to go up

Advantages:

· with waves which are around 400m long 700 kilowatts of electricity per metre could be captured

· if a suitable site could be found, cheaper and environmentally friendly energy could be created

Disadvantages:

· disruptive to other industry, such as fishing

Costs:

· building dams or pipes can be quite expensive

· cheaper energy

6. It is evident that every alternative to the traditional source of power and energy has its pros and contras. Read about the contradictions of another environmental project. Answer the questions using the information from the text as well as your background knowledge.

George Bush says that ethanol will save the world. But there is evidence that biofuels may bring new problems for the planet

The ethanol boom is coming. The twin threats of climate change and energy security are creating an unprecedented thirst for alternative energy with ethanol leading the way.

That process is set to reach a landmark on Thursday when the US President, George Bush, arrives in Brazil to kick-start the creation of an international market for ethanol that could one day rival oil as a global commodity. But a growing number of economists, scientists and environmentalists are calling for a "time out" and warning that the headlong rush into massive ethanol production is creating more problems than it is solving.