There's one issue that will define the contours of this century more dramatically than any other, and that is the urgent and growing threat of a changing climate.
We need to start by having a conversation about climate change. It would be irresponsible to avoid the issue just because it's uncomfortable to talk about.
We do not know how much our climate could or will change in the future. We do not know how fast change will occur or even how some of our actions could impact it.