Science has a culture that is inherently cautious and that is normally not a bad thing. You could even say conservative, because of the peer review process and because the scientific method prizes uncertainty and penalises anyone who goes out on any sort of a limb that is not held in place by abundant and well-documented evidence.

It took me a bit to realize how big the changes have been in the last decade. In so many places - electricity from solar and wind is cheaper than electricity from fossil fuels, and now the batteries are coming down in costs very quickly. So it's very exciting news that needed to be told.

The entire North Polar ice cap is disappearing before our very eyes. It's been the size of the continental United States for the last 3 million years and now 40 percent is gone and the rest of it is going.

The truth about the climate crisis is still inconvenient to the large carbon polluters. And so they want to bob and weave and dodge the truth, and pretend like it's still a big controversy, and it's not. They want to pretend that this is up for debate. Like, whether or not the world is round is up for debate, or whether the moon landing really took place.

The physical relationship between CO2 molecules and the atmosphere and the trapping of heat is as well-established as gravity, for God's sakes. It's not some mystery.

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.

Is there some magic wand they can wave on it and presto! - physics is overturned and carbon dioxide doesn't trap heat anymore? And when we see all these things happening on the Earth itself, what in the hell do they think is causing it? The scientists have long held that the evidence in their considered word is "unequivocal," which has been endorsed by every national academy of science in every major country in the entire world.