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Q&A: Tiffani Williams, computer scientist, on creating an open source tree of li...
Indian schools adopt tablets. Will they improve education?
Need heart surgery? Delay until the full moon
3D printers have a dirty secret
What if we could turn carbon dioxide into electricity?
Peak oil isn't dead; it just smells that way
Extracting drinking water from sweaty shirts
Unending Supply: charge a cellphone with urine
These wetsuits confuse and repel sharks
15 most rewarding jobs of 2013
Smart knife sniffs for cancer
Top 10 U.S. markets for STEM graduates