Morning Extra - How do we tackle underage drinking?

As the Scottish Government holds a summit on under-age drinking in Edinburgh today, do you support its proposals to ban people under 21 from buying alcohol from off-licences? And are we in danger of demonising young people? Plus: Can hydro-electricity solve Scotland's energy needs? More than 1,000 commercially viable new hydro-electric schemes could be developed in Scotland in the coming years, according to a Scottish Government report. The study carried out for the Forum for Renewable Energy Development says hydro-electricity could power a quarter of the nation's homes. Ian Hamilton (standing in for Graham Stewart) takes your calls, texts and emails.