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Ten wave and tidal projects will generate 1.2 gigawatts of power.
Material could charge portable electronics with every step.
A device containing piezoelectric nanowires can now scavenge enough energy to power small electronic devices.
A microfluidics approach could be ideal for harnessing electricity from footsteps.
Adding solar cells to screens could prolong the battery life of many electronic gadgets.
Inexpensive chips harvest mechanical energy to charge batteries for wireless sensors.
A new design could help thermoelectric materials find broader use.