By a couple orders of magnitude, the biggest national security threat to the United States is climate change. And while it is happening incredibly quickly in geological time, it is happening incredibly slowly in human lifespan time, not to mention election cycle or quarterly earnings time. It's really hard to convey to people living their daily lives that we're looking at a once in 60 million years event, the equivalent of massive asteroid strike.
It would help if our fiction writers and producers would help convey the magnitude of the threat.
