Unit 2: Costs and benefits associated with the Severn barrage

This BBC clip and associated article highlights the 2 sides of the argument regarding the proposed Severn barrage project

http://news.bbc.co.uk/1/hi/sci/tech/7450882.stm video

http://news.bbc.co.uk/1/hi/wales/7448973.stm article

a) Explain a private cost asociated with the barrage
b) Explain a private benefit asociated with the barrage
c) Explain an external cost asociated with the barrage
d) Explain an external benefit asociated with the barrage
e) Environmentalists suggest wind generation as an alternative: Explain how cost benefit analysis could be used to decide which project(s) the government should fund