about 37 celcius if my memory serves me correctly.

Its this heat that they tap into.

Humans is hot because humans consume food. We theoretically burn the food, which makes us hot. Our food-source is plants or comes from plants, because that's what the animals we eat eat (Eehh! Think about that one :)). The sun is what makes them grow. It serves as a powerplant, for the biological reactions inside the plant. The reactions wouldn't occur without the heat (and light) from the sun. You can however fake the sun with an other source of energy, but as all our energy sources is collected from the sun (which is the only energy source in the solar system) that actually only means a redirection of energy.

So...once all the plants on the Earth is consumed/transformed into energy there's is basically no energy left on the earth, which means that the closest source of energy is the sun. But as humans covered the sky (or whatever) they blocked the source, which means that no energy is available...

Hope it is understandable. It's a bit like Gibbs energy system if you have taken chemistry classes

"Combined with an advanced form of fusion, the machines had all the energy they would ever need......."

Yah, I know it all comes down to BS.

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"Everyone's favorite implement for any task"
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[This message has been edited by Kolben (edited May 28, 2000).]