Are we alone in the universe? Or is the cosmos teeming with life? And what difference would it make if we found the answer? Those are just some of the questions we address in this week's show.

We can trace our fundamental forces back to microseconds after the Big Bang. If we can trace them back this far, wouldn't the only way to change the fundamental laws of the universe be to recreate the conditions of the Big Bang? -Zach in Arkansas

What if gravity suddenly stopped working? Or what if e gradually came to equal mc3 rather than mc2? Could the fundamentals of physics really change? Or Is this just the stuff of science fiction?

What if gravity suddenly stopped working? Or what if e=mc3 rather than e=mc2? Could the fundamentals of physics really change?

Are space and time two separate entities? Or are they just different dimensions of one thing—the space-time continuum? And what difference does it make if they are?