When you talk about President Trump, the cable networks turned over so many hours of prime time to him. Why? Because he was entertaining, but also because it drove ratings. And that is different from what the news media is supposed to focus on.

When it comes to climate, we can all make a big difference.

Fifteen per cent of the population believe the moon landing was actually staged in a movie lot in Arizona and somewhat fewer still believe the Earth is flat. I think they all get together with the global warming deniers on a Saturday night and party

Our world faces a true planetary emergency. I know the phrase sounds shrill, and I know it's a challenge to the moral imagination.

It should be lifted above partisanship because it's a question of survival. It's a moral issue.

Political will is a renewable resource, and everyone can have it in abundance if they so choose.

The catastrophe now threatening us is unprecedented - and we often confuse the unprecedented with the improbable.