Lab Notes: What our teeth tell us about our evolutionary past

This week's biggest stories Hubble space telescope captures image of most distant star ever seen DNA is not our destiny; it's just a very useful tool Ewan Birney Mosquito early warning app detects the insects from their buzz Why two brains are better than one New research sheds light on Neanderthals' distinctive features What causes knuckles to crack? Scientists now think they know Galaxy without any dark matter baffles astronomers Lost Amazon villages uncovered by archaeologists Planet of the apis: Nasa develops plan to launch 'Marsbees' From the science blog network Lost Worlds Revisited / On fossil poo and picky eaters: a new study sheds light on New Zealand's past ecosystem Head quarters / How political tribalism can be explained using social science Lost Worlds Revisited / Argonauts: the astronauts of the sea Podcasts Science Weekly / What our teeth tell us about our evolutionary past A Neuroscientist Explains / Where perception ends and hallucination begins Alex Bellos's puzzle Can you solve it? The art of the deal Three problems that require you to spot three different patterns in a set of playing cards Eye on science Video / Elephant seen 'smoking' in southern India Footage of an elephant blowing ash has baffled wildlife experts, who say they've never seen behaviour like it before Where to find us Twitter: @guardianscience | @guardiansciblog Facebook: Guardian Science Guardian News & Media Limited - a member of Guardian Media Group PLC. Registered Office: Kings Place, 90 York Way, London, N1 9GU. Registered in England No. 908396