Re: Miss Pop Ulation (was: population, homosexuality)

Robert J. Bradbury (
Mon, 6 Dec 1999 10:39:36 -0800 (PST)

On Mon, 6 Dec 1999 wrote:

> There is a worm that gets its food solely from
> symbiotic algae. However, sunlight on a human's body
> isn't nearly enough energy for us. Besides, we enjoy
> eating.

I addressed this in a previous note. It turns out that with chlorophyll skin cells we can come pretty close to gathering enough power to operate. Standing still in full sun in someplace like Arizona with both front and back sides receiving sunlight (using some reflector system), not thinking very hard and I'm pretty sure that you have a net positive energy input. You simply have to balance your power gathering intake time with your energy output time. It *will* be much more time consuming than eating but the discussion had more to do with population limits and in that case you want to focus what the real efficiency limits are.