Nuclear war will not cause human extinction, but the end of our present civilization. We are a tough breed. We will not go extinct for a long time.
We are heading into trouble climate change, and how we overcome them remains to be seen, but I am sure we will in one way or another.
We have are heading – from sailing boats and muskets 200 years ago – into something that looks like a technological singularity. That’s 300 years, and like snapping the fingers in human history. Will technology save us or bring us down?
A superflu, asteroid and supervolcanoes are huge threats, but I think we will be here for a long, long time.
But there were possibly some dinosaurs thinking that too.