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.

I feel that one of the most important things I can do is connect climate change to the values, the faith, and the issues we already care about. And if, in the process, I have to sidestep around some very explosive mines, I will do that.

The first thing we can do as individuals and as communities, like a school or a university or a church, is cut our energy use. Do an energy audit or measure our carbon footprint using online carbon calculators that are free, easy, and cheap. Get a list of the ways that we can stop wasting so much energy and save money.

I think it's interesting that the United States and Australia are two of the most individualistic nations in the entire world in terms of national personality.

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

It's a common perception that science and religion are mutually exclusive. But there are many scientists who would consider themselves to be spiritual people. Not only that, but in the case of climate change - a scientific issue with strong moral implications and difficult decisions to be made - it's essential to connect the science to our values. And for many of us, our values come from our faith.

There is no set period of time or total amount of carbon emissions that we can stay below to ensure we stay safe.