Essentially, by 2050 we need all activities outside agriculture to be near zero carbon emitting if we are to stop carbon dioxide levels in the atmosphere growing

I think the wonderment of seeing my two sons developing makes me incredibly optimistic about human potential. It makes you think: 'My goodness. It's a miracle that's going on here. What could the human race do together?'

In the end, human history is made up of all our decisions.

We are a European nation - must stay one.

Dangerous climate change... It's important not to be alarmist but it is very important to be alarmed

The window of opportunity to avoid dangerous climate change is closing more quickly than previously thought.

And the truth is, those who are terrorists only have to succeed once, and those of us who are trying to build an inclusive society have to succeed every time.