I don't have to change the world all by myself, I just need to partner in the work God wants us to do.

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

My faith tells me that God does want people to understand climate change and do something about it.

I think the biggest pushback comes from people who perceive me to be a threat. Having bloggers who are dedicated to making up false information about you, having anonymous people write nasty emails and letters, having organizations file legal requests for your work-related emails, and all the other things that happen can be very depressing and discouraging.

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.

For Christians, doing something about climate change is about living out our faith - caring for those who need help, our neighbors here at home or on the other side of the world, and taking responsibility for this planet that God created and entrusted to us.

It's easier to discredit the science than to say that climate change is a genuine issue but we don't want to do anything about it.