Unit 2: Externalities associated with alcohol consumption

This BBC Wales article argues that overconsumption of alcohol is a growing problem

http://news.bbc.co.uk/1/hi/wales/6955616.stm

a) What are the negative externalities associated with excessive alcohol consumption?
b) Evaluate how successful the 4 point BMA proposals are likely to be in reducing the problem
c) Evaluate how successful the banning of drinking on the streets is likely to be in reducing the problem