Maybe a nice, big Gamma blast is headed our way? It's speculated that it has happened to Earth before, and wiped out %90 of life on land and in the sea. Mankind better start getting serious about reducing the single-point-of-failure issue when it comes to our survival. We *have* to get off this rock and start moving up on the Kardashev scale. Especially if we are concerned about survival as a species. Not sure we deserve it but....Deserves got nothing to do with it.