A crash course in changing the world.
I was doing some research into the Army's Land Warrior project and discussing it with a friend. The biggest challenge they face is how to power all the computer gear that the soldiers are expected to carry. Their solution is a great deal of batteries. That makes it heavy on top of all the gear a soldier carries anyway.
If a soldier is traveling by vehicle, the vehicle can power the computer gear. However, soldiers traveling by food don't have access to that power. My solution is to create boots with some kind of generator built into them. Whether it's piezoelectric or some kind of mechanical generator based on the flex of the boot, the shock from each step can be absorbed and turned into electricity. If done right, it will not only power the computer systems, but also make things more comfortable for the ground soldier.