tag:blogger.com,1999:blog-6762928.post8642363521628524205..comments2024-01-03T05:23:36.046-08:00Comments on The Citizens: Virgin Earth ChallengeUnknownnoreply@blogger.comBlogger8125tag:blogger.com,1999:blog-6762928.post-33477868901124671512020-02-05T12:37:26.434-08:002020-02-05T12:37:26.434-08:00jordan shoes
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Plant tens of billions of trees.2. Grow hundred...1. Plant tens of billions of trees.<BR/>2. Grow hundreds of thousands of square miles of new forest--more than just trees.<BR/>3. Bury billions of trees and other forest biomass per year--a job more difficult than the planting.<BR/>4. Do all this using non-carbon-emitting helicopters, bulldozers, etc...<BR/>5. Use tropical zones only.<BR/><BR/>I looked for planting rates. The only <A HREF="http://en.wikipedia.org/wiki/Treeplanting" REL="nofollow">estimate</A> I could find was 1,600 trees per person per day... which works out to about 100,000 person-years of effort to plant the minimum tree number. This excludes all logistics costs and personnel... and doesn't account for the need to plant entire <B>forest ecosystems</B>.<BR/><BR/>Very difficult, but not impossible, LTG. As I said, it's a good idea. As for the $25 million, however, unfortunately part of the fine print in the Virgin Earth Challenge says that the plan must be, "commercially viable." You got robbed ;-(Dr. Strangelovehttps://www.blogger.com/profile/14407042105777411150noreply@blogger.comtag:blogger.com,1999:blog-6762928.post-58711359045877870502007-02-12T21:42:00.000-08:002007-02-12T21:42:00.000-08:00Well, where's my $25 million??Well, where's my $25 million??The Law Talking Guyhttps://www.blogger.com/profile/17886791396468512490noreply@blogger.comtag:blogger.com,1999:blog-6762928.post-81580070812222715562007-02-12T21:40:00.000-08:002007-02-12T21:40:00.000-08:00Not to be contrarian, but I did suggest burying th...Not to be contrarian, but I did suggest burying the trees in the earth - to keep the carbon out of the atmosphere. <BR/><BR/>I say, let's fund tree planting. An area the size of Colorado sounds doable. Nobody is using the Dakotas.The Law Talking Guyhttps://www.blogger.com/profile/17886791396468512490noreply@blogger.comtag:blogger.com,1999:blog-6762928.post-53704343613259868632007-02-12T15:18:00.000-08:002007-02-12T15:18:00.000-08:00Let's put this in perspective. When you burn a ga...Let's put this in perspective. When you burn a gallon of gasoline, where does it go? The atmosphere of course. The government <A HREF="http://www.fueleconomy.gov/feg/co2.shtml" REL="nofollow">estimates</A> that a gallon of gasoline contains 5.5 pounds of carbon, which yields 20 pounds of carbon dioxide when burned in your car.<BR/><BR/>That means just 2.5 gallons of gasoline--even by the enthusiastic estimate of "Trees of the Future"--negates the sequestration effects of a tree for an entire year. If you drive 10,000 miles per year at 20 miles per gallon, congratulations: you've added 5 <B>tons</B> of carbon to the atmosphere! That requiring 200 new trees. <BR/><BR/>The EPA <A HREF="http://www.eia.doe.gov/oiaf/1605/ggrpt/pdf/chapter2.pdf" REL="nofollow">estimates</A> that U.S. motor gasoline and diesel emissions in 2006 amounted to 1.6 billion tons of CO2. Part of the issue here is that the average fuel efficiency of North American automobiles is only half that of our European and Japanese counterparts. If we could match them, we would achieve much of that one billion ton reduction right there.Dr. Strangelovehttps://www.blogger.com/profile/14407042105777411150noreply@blogger.comtag:blogger.com,1999:blog-6762928.post-67227535860919534152007-02-12T14:48:00.000-08:002007-02-12T14:48:00.000-08:00Projects like Trees for the Future claim that a si...Projects like <A HREF="http://www.treesftf.org/about/cooling.htm" REL="nofollow">Trees for the Future</A> claim that a single tree can sequester about 50 lbs. of CO2 per year, or 1/40 of a ton. To achieve a billion ton reduction, you'd need to plant 40 billion trees. (Other estimates are less generous, indicating 50-60 billion trees.)<BR/><BR/>An article on <A HREF="http://en.wikipedia.org/wiki/Reforestation" REL="nofollow">reforestation</A> in Wikipedia suggests a hectare of rainforest can achieve 38 tons of carbon sequestration per year. To achieve a billion ton reduction, that comes out to 263,000 square kilometers... an area the size of Colorado. <BR/><BR/>The EPA gives <A HREF="http://www.epa.gov/sequestration/rates.html" REL="nofollow">figures</A> for new forest that are rather more conservative. They range from 14% to 60% of the figure quoted in Wikipedia... so we could be talking about an area several times larger. And then, don't forget, we have to dispose of those billions and billions of dead trees in a way that does not burn fossil fuels or put carbon into the atmosphere. Oh, and they need to be in tropical areas: some <A HREF="http://www.wired.com/news/technology/0,69914-0.html" REL="nofollow">studies</A> show that trees also re-radiate heat rather efficiently, so temperate forests actually would <B>increase</B> global warming. We'd need to plant these forests entirely in tropical zones.<BR/><BR/>So it's a good idea, and a help, but not really a solution.Dr. Strangelovehttps://www.blogger.com/profile/14407042105777411150noreply@blogger.comtag:blogger.com,1999:blog-6762928.post-18723415598031252742007-02-10T09:57:00.000-08:002007-02-10T09:57:00.000-08:00How 'bout trees? All you have to do is make sure ...How 'bout trees? All you have to do is make sure that, when they die, you bury them deep underground so that their carbon is not returned to the atmosphere.The Law Talking Guyhttps://www.blogger.com/profile/17886791396468512490noreply@blogger.com