Experts Gather To Discuss Whether We Should Send Messages To Aliens

This coming weekend at the annual meeting of the American Association for the Advancement of Science, experts will be discussing the potential benefits and risks of a SETI scheme in which messages about Earth — including the entire contents of Wikipedia — would be transmitted to hundreds of star systems. »2/09/15 11:40am2/09/15 11:40am

There's a 50-50 chance of another 9/11-sized attack within a decade

As we approach the 11th anniversary of the 9/11 terrorist attack, we can be grateful that nothing like it has happened since. But that doesn't mean that something very much like 9/11 — or even worse — couldn't happen again. In fact, new research suggests that we may be seriously underestimating the risk of another… »9/05/12 3:00pm9/05/12 3:00pm

The Astronomer Royal tells io9 how he plans to save humanity from extinction

Back in 2003, the preeminent physicist and cosmologist Sir Martin Rees created a considerable stir with the publication of his book, Our Final Hour, a look into how "terror, error, and environmental disaster threaten humankind's future". Rees argued that we've grossly underestimated the potential risks posed by… »7/09/12 2:22pm7/09/12 2:22pm