Re:Renewables now account for 25% of German energy production
by beefman on Tuesday July 31, 2012 @02:26AM
(#4316002)
You act as if the distinction makes sense. Structural materials are more abundant than energy-containing materials? Hydrogen is the most abundant element in the universe. Structures, regardless of what they're made of, contain embodied energy by virtue of having structure.
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Re:Renewables now account for 25% of German energy production
by dredmorbius on Tuesday July 31, 2012 @03:31AM
(#4316125)
Please point me at the large available free hydrogen reservoir on Earth.
Sources of useful energy are not hugely abundant. And, in the case of nonrenewable energy sources, are consumed in the process of utilizing them.
If you're looking at the Earth's crust, it's 60% silica, with most of the remaining 40% being various highly oxidized compounds, including certain quantities of dihydrogen oxide.