Sir Ed Davey: “We say no. We can cut taxes and support the most vulnerable people in our country.”

The jury is very much out on the Rosebank oil field, not least because that may not pass the same test on reducing carbon emissions.

This would mean people who are working hard now - the millennials - when they retire would have a very poor pension.

Mothers deserve safe, compassionate care.

The carbon footprint of that is far bigger, a lot more damaging for our climate, so this way, not only is it better for the climate, but also tax revenues come to the Exchequer.