Climate change is possibly the greatest act of murder-suicide in the history of the mankind. It is changing the planet in irreversible ways. It is by far the biggest threat that humanity faces in the coming decades. Take a look at the current presidential race, though, and you might think that climate change was some petty fringe concern. Which is crazy—so, so unbelievably crazy. It is the great missing issue from the 2016 campaign, just as it was the great missing issue from the 2012 campaign, and the one before that, and the one before that.