judgecorp writes: "Everlasting green energy for RF tags and other low-power devices could be possible as scientists have harvested energy from ambient radio waves using cheap antennas printed by an ordinary inkjet. The scientists, from Georgia Tech, started at 100MHz but have now produced systems which scavenge power at up to 60GHz, allowing them to draw power from most of today's major radio technologies."
The Tao is like a stack:
the data changes but not the structure.
the more you use it, the deeper it becomes;
the more you talk of it, the less you understand.