Naked Science: Death of the Universe
Watching some TV... NatGeo, one of my favorite channels (except when they are running those stupid Dog Whisperer, Dogtown, Dog this, Dog that shows). Anyway... tuned in just in time to see some scientist theorizing on how the universe will end by just disintegrating. On the atomic level. So... you are standing there and because the universe is expanding (everything is moving away from everything else), the distance between one thing and another is getting greater and greater, so eventually even the atoms loose touch with each other... so, what we see as solid objects will just tear and rip apart right down into their constituent atoms. We, everything we know or think we know, will just dissolve.
What a horrific thought, eh? Glad I won't be around to experience that.