faster than light space travel. It describes how, in theory, a "warp drive" could be created which would allow a ship to travel to distance planets quickly, and even to distant stars.
On one hand, it's very exciting. We could finally send people to Mars, and then to other stars that may have planets with life. We could even start colonizing other planets, before we destroy this one. With unlimited resources, we could probably eliminate crap like poverty and hunger (though we'd probably still kill each other in wars for no good reason, like we always have).
On the other hand, there are a billion things that could go wrong. The warp drive works by transporting the ship to another dimension, where light speed is faster. According to the article, even top physicists are confused by the theory and don't fully understand it. For all they know, attempting to use the warp drive could rip some hole in space-time and destroy the entire universe. Or giant space creatures could follow us home from the other dimension. Then eat Earth in one bite. Because they're giant.
I think anything like this is a long way off, and we may never fully understand the universe beyond the 4 dimensions our brains have been evolutionarily programmed to understand. But hey, it could happen, for better or for worse.