When it comes to climate, we can all make a big difference. At the most basic level, don't let denial go unchallenged and win the conversation on climate.

Here`s my point. I don`t want you to be in a position years from now where you welcome Hillary Clinton and say actually you did win. It just wasn`t close enough to make sure that all the votes were counted or whatever. Elections have consequences. Your vote counts. Your vote has consequences.

The science linking the increased frequency and severity of extreme weather to the climate crisis has matured tremendously in the last couple of years.

There are many who still do not believe that global warming is a problem at all. And it's no wonder: because they are the targets of a massive and well-organized campaign of disinformation lavishly funded by polluters who are determined to prevent any action to reduce the greenhouse gas emissions that cause global warming out of a fear that their profits might be affected if they had to stop dumping so much pollution into the atmosphere.

A lot of people go straight from denial to despair without pausing in the middle and doing something about it.

I take no pleasure in the fact that the scientific predictions I’ve relayed to popular audiences turn out to be true.

The ability of big money to shape perceptions - where you have four anti-climate lobbyists for every single member of the House and Senate - is a big factor.