Active Entries
- 1: Clarke Award Finalists 2001
- 2: Homeward and Beyond by Poul Anderson
- 3: Books Received, June 7 to June 13
- 4: So, there's an employee I dread managing
- 5: Bundle of Holding: Coriolis Mercy of the Icons T
- 6: People who say they like golden retrievers
- 7: Five SFF Books About Oddballs Resisting Conformity
- 8: The Transitive Properties of Cheese by Ann LeBlanc
- 9: That was fast
- 10: Five Stories About Time Travel on a Limited Scale
Style Credit
- Style: Neutral Good for Practicality by
![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png)
timeasmymeasure
Expand Cut Tags
No cut tags
no subject
Date: 2005-03-09 08:26 pm (UTC)Call the human diet 400 watts, call the superplant 10% efficient at turning light into energy humans can use and set insolation at about 100 watts, then we need 40 m^2 per person. Any _obvious_ math errors this time?
That's about 25,000 people fed per km^2 or one million per 40 km^2. Canada needs 30x40 = 1,200 km^2, the US needs 300x40 = 12,000 km^2 and the world needs 6,000 x 40 = 240,000 km^2 to power everyone.
Definitely room to improve, there. Not that feeding people is an insurmountable problem right now but the footprint of agriculture is a pain.