The Great Filter theory suggests humans have already conquered the…

It's difficult to not be pessimistic when considering humanity's future prospects. Many people would agree that it's more likely than not that we'll eventually do ourselves in. And in fact, some astrobiologists theorize that all advanced civilizations hit the same insurmountable developmental wall we have. They call… » 12/21/12 11:00am 12/21/12 11:00am

Does a galaxy filled with habitable planets mean humanity is doomed?

Last week, we reported on the astounding confirmation that all solar systems in the Galaxy probably have planets, and that Earthlike planets are more common than previously thought. While this seems like good news for SETI-enthusiasts, the revelation is actually quite disturbing. » 6/18/12 2:20pm 6/18/12 2:20pm