The word "evangelist" means someone who spreads good news. Studying the impacts of climate change as I do, it's hard to come up with good news. In many ways I feel more like a Cassandra or a Jeremiah than a good-news evangelist.

It's a new normal and I really do think that global weirding is the best way to describe what we're seeing.

It's easier to deny the reality of the problem altogether than acknowledge that it is real.

I feel like a physician, one who's done a scan of the patient's body and seen evidence of a potentially serious issue.

We must also suffer the consequences of our past decisions. And for that, we must open our hearts to those in need.

For many of us, our values come from our faith.

One of the biggest issues with renewables right now is the fact that if the wind isn't blowing, if the sun isn't shining, we don't have energy. Many people are working on storage technology so when the wind isn't blowing, we can use the energy stored in our giant batteries, essentially. But what happens if we don't have enough stored energy?