This week in science

Anti-aging compound: http://bit.ly/J7CTQ1
Galaxy arms: http://bit.ly/18GPrJM
Crocodiles: http://bit.ly/1fz4YtZ
Neanderthal genome: http://bit.ly/1a2cgCJ
Flowering plants: http://bit.ly/J7CUn0
Hand bone: http://bit.ly/1bZHoWG
Water on Mars: http://bit.ly/1bbkVSI
Algae to oil: http://bit.ly/1icCpXo