LifeEarth's first life may have fuelled itself with a metal metabolism The first living organisms had to make essential carbon-based chemicals, and they may have done it by harnessing the chemical power of metals like nickel 51¶¯Âþ
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