When fear displaces reason, the result is often irrational hatred and division.

What we've often seen is that when we Americans say, look, we've got to reduce pollution, business - some businesses complain about it, but almost every time, it's turned out to be easier and cheaper and accomplished faster, and they've gained confidence, and then we go farther.

Anyone who deals with the climate crisis has an internal dialogue between hope and despair, because the challenge is so huge and the danger is so great and the stakes are so high. But I have always resolved that in favour of hope, and actually I'm more hopeful now than I was a decade ago when the solutions were visible on the horizon, but you had to seek reassurance that the technology experts that they're coming, they'll be here.

I decided to pick the diet that I thought would maximize my chances of long-term survival.

Speaking from my own religious tradition in this Christmas season, 2,000 years ago a homeless woman gave birth to a homeless child in a manger because the inn was full.

Most people talk as if Miami and Bangladesh still have a chance of surviving: most of the scientists I spoke with assume we'll lose them within the century, even if we stop burning fossil fuel in the next decade.

How could this Y2K be a problem in a country where we have Intel and Microsoft?