What If We Nuked the Moon?

In 1044, the Chinese invented gunpowder. And we’ve been getting into trouble ever since. Fireworks are cool, nuclear warfare is not. And nuking the moon...

What If You Met a Time Traveler?

If time travel is possible, why haven’t we met a single time traveler yet? And if we did meet one, how would we know they weren’t faking it? What would their...