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Health & MedicineHeart benefits from quitting smoking outweigh weight gain
People who give up cigarettes have fewer heart problems despite gaining weight.
By Nathan Seppa -
Planetary ScienceLife-friendly environment confirmed on Mars
Drill sample from bedrock reveals chemistry that could have supported microbial life.
By Andrew Grant -
HumansStudents bring home big prizes for science projects
The 2013 Intel Science Talent Search awards teens for research.
By Meghan Rosen -
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TechPlastic implant replaces three-quarters of man’s skull
The polymer cranium was made using a 3-D printer.