Morning Extra - Rail vs air: which do you prefer?

Should we invest in rail instead of expanding air travel? A group of people protesting about the proposed expansion of Heathrow Airport will give evidence to the Scottish Parliament today. They say we'd all be much happier with a new, high speed, rail line between Scotland and London. Plus: Has Aberdeen's crackdown on prostitution backfired? Aberdeen police say new legislation on kerb crawling has had no impact on the level of prostitution in the city. It's the latest scheme to try and get rid of this problem: we've had tolerance zones, crackdowns on those who buy, and those who sell sex. So what's the answer? Graham Stewart takes your calls, texts and emails.