Using the Sokka unit basically involves kicking a ball against a flat playing surface containing a number of electronic sensors that monitor accuracy and technique.

BBC: Kevin Keegan launches football training systems

In addition to containing the vast majority of the liquid freshwater on the surface of our planet, humans use lakes for more purposes than any other type of water system.

UNESCO: Summary

The researchers got some brave specimens to move a mouse cursor by implanting plastic pads containing electrodes underneath their skulls, with the sensors sitting on the surface of the brain.

ENGADGET: Test subjects with electrode implants use mind control to move a cursor

Just one day after the revamped nanos were announced at the " It's Showtime" event, some drool-worthy shots of the green and blue 2G nanos managed to surface, and now we're graced with a photoset containing the esteemed 8GB black-only model.

ENGADGET: 8GB black 2G iPod nano gets unboxed