BiologyWise
Biology Wise: Facts About Autotrophs and Heterotrophs
Explains what autotrophs and heterotrophs are, the several types of each, their roles in an ecosystem's food chains, and the differences between them.
Oak Ridge National Laboratory
Oak Ridge National Laboratory: Insulation Fact Sheet
Several well-written pages using easy-to-understand language. Explains about every detail concerning insulation and its installation or replacement. Discusses R values, heat loss, insulation types, etc.
Other
The Sustainable Scale Project: Ecological Footprint
The Ecological Footprint is rooted in the fact that all renewable resources come from the earth. It accounts for the flows of energy and matter to and from any defined economy and converts these into the corresponding land/water area...
Other
Online Conversion
Conversion calculators galore! Convert just about anything from one measureable unit into another measureable unit here with over two dozen calculators. Each of the links is specific to a measureable quantity. Some examples include...
Other
Wind Map
An invisible, ancient source of energy surrounds us-energy that powered the first explorations of the world, and that may be a key to the future. This map shows you the delicate tracery of wind flowing over the US.
Science4Fun
Science4 Fun: Hydropower
What is hydropower? Discover how electricity is generated from hydropower, three methods of generating electricity, and the advantages and disadvantages.
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