HumansUploading your brain will leave you exposed to software glitches Think a digital version of your mind will allow you to live forever? It might, but it will also open you up to software manipulation and server problems, says Annalee Newitz Comment
VideoWhen will we hear from aliens? We may already have done so It is just a matter of time before we hear from alien civilisations, argues Avi Loeb – in fact, we may already have done so Video