Re: renewable energy

[Ludwik Kowalski <kowalskiL@MAIL.MONTCLAIR.EDU>]

"John S. Denker" wrote:

> The coal-exhaustion timescale is not very long.  World
> annual energy budget 400 quads and increasing;  21 million
> BTUs per ton of coal;  world reserves one trillion tons of
> coal.  Do the math.
>
>   http://www.eia.doe.gov/kids/infocardnew.html

This link leads to worth seeing educational materials.
For example the energy quiz:

     http://www.eia.doe.gov/kids/energyquiz.html

or the energy guideline for teachers:

    http://www.eia.doe.gov/kids/guidelinesindex.html

or the energy units conversion chart:

    http://www.eia.doe.gov/kids/units.html

etc., etc.