How cool is this? Nokia patents the first self-charging phone.

I’d read about these here “piezoelectric crystals” before, if we can make them affordable I think they should be used everywhere. All new roads and pavements should come with them installed as standard – think of all that kinetic energy we’re wasting which coudl be turned into electrcity?

Also (and this is something of a deviation) I look forward to the day wehen everyone has a few little water wheels inserted into their arteries, which are attached to a capacitor, so that current is generated by your heart pumping blood round your system. Everyone could have a special plug in their home or at work which would allow them to download into the national grid every so often. It would be brilliant.