Isaac Arthur on MSNOpinion

The ancient alien theory sounded possible - until the missing evidence became impossible to ignore

What if an alien civilization did not just exist somewhere in the universe, but actually reached Earth in the distant past?

This Is How Humanity Will End, Scientists Say—And It Isn’t Pretty

So, by that standard, could a similar fate await humanity in the not-so-distant future? Well, as the saying goes, all good ...