The US climate zones were re-mapped this year.
http://www.usatoday.com/news/nation/environment/story/2012-01-26/USDA-climate-zone-map/52787142/1
Plants have a fantastic solar energy conversion rate. With genetic engineering, we can make varieties of plants that do even better, many times what we can do with direct conversion to electricity.
Jim
__._,_.___
.
__,_._,___
No comments:
Post a Comment