The safety of cellphones has been called into question, again. This time the scientific community is paying very close attention.
Last summer neurosurgeon Leif Salford and colleagues at Lund University
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.
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