[slothtrop]

According to the IPCC, climate change will not lead to apocalyptic results. There will be discomfort and further destruction of the environment, but that's as much as is telegraphed by bulk of climate scientists.

It's still imperative that changes be made, but soothsaying is irrational and therefore unhelpful because it can easily be identified and disregarded by deniers, but also because it's more demotivating than it is motivating. If you're convinced the world is going to end, you'll just withdraw.