There's no accepted global policy on what to do about asteroid impacts.

While we didn't know the dinosaurs personally, we do know that they were wiped out by an asteroid impact.

By preventing dangerous asteroid strikes, we can save millions of people, or even our entire species. And, as human beings, we can take responsibility for preserving this amazing evolutionary experiment of which we and all life on Earth are a part.

We not only need to train people, we also need to develop deflection technologies.

We can both prevent asteroid impacts and address climate change. It's not either-or.

We could not wipe ourselves out with a nuclear war. I do not want so sound too positive. It would be a catastrophe, but it would not be a final one. We are not powerful enough for that. An asteroid could be that powerful. That is why we need to do our homework.

Journalists often put things into either-or scenarios.