The idea of mice living three times longer after being injected with stem cells from their siblings is both worrying and exciting. Thanks to +Doug Belshaw for pointing me in its direction with his excellent Things I Learnt This Week email.. ?

27 Science Fictions That Became Science Facts In 2012
We may never have our flying cars, but the future is here. From creating fully functioning artificial leaves to hacking the human brain, science made a lot of breakthroughs this year.