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Re:Q&A: Bill Gates on investments in energy technologies by dredmorbius on Sunday July 24, 2016 @05:38PM (#12155033)
I'm aware of that (and pointed to a few examples myself).

What I'm pointing out is that energy is a means to some service goal, and in the case of construction, alternate means to ends may well obviate much the need for new energy supplies.

Or taking an alternate formulation: rather than tap energy and convert and store and transform it multiple times to accomplish some goal, employ biological means to achieve the same end with far fewer (loss-entailing) energy transforms.

Trees, plants, algae, and/or microbes, operating over a large area, accomplish a very large net throughput. The questions are whether we can manage that, what outputs are possible, at what rates, and what subsequent changes in capabilities result. I suspect no biologic will have, say, the capabilities of steel. If we're limited to masonry or ceramic-based structures, the age of the 100-storey supertower is gone, but there are a many 10-20 storey towers which might be possible, resulting in high urban densities, if that's what we want.

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