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I always cringe whenever I read "Venus" in these conversations. My greatest fear is that all sapient life anywhere is destined to screw itself over like this, and that Venus itself became an uninhabitable hellhole because sapient life did the same thing there that we're doing right now. The best way I have to dissuade myself from this thinking is that any past Venusians would have at least put something in space that was obviously not of natural origin if they had that level of technology, but that could have been destroyed a long time or maybe they didn't even give a poo poo about space and never got around to advancing past 19th century technology.
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# ? Sep 21, 2012 05:41 |
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# ? May 30, 2024 09:20 |
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quote:Climate Change:Oh God, we've solved Fermi.
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# ? Sep 21, 2012 06:57 |
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Some Guy TT posted:I always cringe whenever I read "Venus" in these conversations. My greatest fear is that all sapient life anywhere is destined to screw itself over like this, and that Venus itself became an uninhabitable hellhole because sapient life did the same thing there that we're doing right now. The best way I have to dissuade myself from this thinking is that any past Venusians would have at least put something in space that was obviously not of natural origin if they had that level of technology, but that could have been destroyed a long time or maybe they didn't even give a poo poo about space and never got around to advancing past 19th century technology. Yeah I was being colorful. We're probably not going to go the full venus. *I think
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# ? Sep 21, 2012 07:05 |
I assume this is naive but has anyone done any modelling on how much could be done with a massive reforestation program? Instead of painting roofs white just put permaculture fruit gardens pretty much everywhere, a massive expansion of national parks, just jamming productive trees anywhere they'll fit, planned rainforests etc?
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# ? Sep 21, 2012 07:13 |
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Venus's atmospheric mass is 93 times that of Earth, and 96.5% of it is carbon dioxide (compared to Earth's 0.038%). Even in the absolute worst case scenario, Earth isn't going to become Venus, full stop.
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# ? Sep 21, 2012 08:27 |
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Ratios and Tendency posted:I assume this is naive but has anyone done any modelling on how much could be done with a massive reforestation program? Instead of painting roofs white just put permaculture fruit gardens pretty much everywhere, a massive expansion of national parks, just jamming productive trees anywhere they'll fit, planned rainforests etc? It's not naive. I recall reading a study that concluded that planting trees is currently the cheapest method of sequestering carbon already in the atmosphere. Unfortunately I can't remember the specific numbers or whether it could be scaled up to usefully reduce atmospheric carbon content, but I'll try to find the study again. Additionally countries like Canada and Russia routinely use their large forested regions to claim substantial reductions in the amount of carbon they emit (see the LULUCF credits). The downside with relying on trees is that they eventually die or catch on fire and return a portion of that carbon to the atmosphere. It's also worth noting that as climate change begins to take (more) effect, the rate of forest fires will likely increase. I still think large scale tree planting is worth doing if done intelligently, and it's a more realistic plan than the various aerosol/cloud formation/catalytic carbon capture methods that rely on some sort of technological breakthrough to become cost-effective. A lot of the required infrastructure is already in place, as forestry companies in the developed world routinely replant forested areas. A reasonable cap and trade or carbon tax system would easily cover the costs (tree planting is cheap, its powered by poor college kids desperate to pay tuition). A related approach would be to stop deforestation, which ties in neatly with consumption reductions that we need to undertake anyway.
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# ? Sep 21, 2012 11:40 |
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I know it's incredibly selfish and insular but at this sorry stage it's almost like the best thing I can hope for is that the poo poo hits the fan just after I'm dead. I'm 24 now, so this hope is probably in vain, and I will likely live to see calamitous events, but I feel completely powerless to enact any change. Simply hoping I live to be about 70 with a roof over my head is about as optimistic as I can be, and many days it's hard being even that optimistic. Being filled with a vague dread is not a healthy mindset but how can any informed person not have these moments or days of panic? I hear people in this thread suggesting that we should simply enjoy our lives and be glad we won't be around for the worst of it which strikes me as by far the most morally questionable option. Surely we are compelled to act towards *something* out of a sense of basic conscience and moral obligation? However, in some ways this 'sit back and enjoy your life' may also be the most pragmatic option, because I certainly do not see the drive needed among the public to drastically re-imagine and restructure our society. This re-structuring is basically the only option human beings have to stop mass extinction. But once people are forced to wake up to this fact it may be fruitless and probably too late. Presuming that 'enacting change' is a fruitless goal, any energy I have left after a day of work can either be transformed into dread and worry, and blame and ire towards baby boomers/global capital for setting us onto this course, or it could be used to enjoy the time I have with my friends, by living modestly and not getting too attached to any particular way of doing things. Am I doing it right? Is there any other choice? I can't sit around going 'why me? Why now?', and I can't try and convince denialists who are convinced of an entirely different version of reality.
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# ? Sep 21, 2012 17:41 |
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Uranium Phoenix posted:Venus's atmospheric mass is 93 times that of Earth, and 96.5% of it is carbon dioxide (compared to Earth's 0.038%). Even in the absolute worst case scenario, Earth isn't going to become Venus, full stop. Yeah. We'll all be dead long before we hit 1%.
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# ? Sep 21, 2012 18:00 |
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Ratios and Tendency posted:I assume this is naive but has anyone done any modelling on how much could be done with a massive reforestation program? Instead of painting roofs white just put permaculture fruit gardens pretty much everywhere, a massive expansion of national parks, just jamming productive trees anywhere they'll fit, planned rainforests etc? You could do that but you would need to sequester then carbon somehow. Best way is probably to throw all of the wood and biomass into a subduction zone of the crust and let the mantle take care of it.
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# ? Sep 21, 2012 18:08 |
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McDowell posted:Until about 2010 all observations were within two standard deviations of the mean (the upper and lower dotted lines) Following links backward suggests that it's from models that participated in the coupled model intercomparison project, which was in 1995. So did most of these models 'project' incorrect levels of sea ice for the past, or what the hell? (unrelated, but the dotted lines are listed as indicating one standard deviation distance from the mean, not two) Strudel Man fucked around with this message at 20:15 on Sep 21, 2012 |
# ? Sep 21, 2012 20:09 |
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edit: wrong thread
bpower fucked around with this message at 20:58 on Sep 21, 2012 |
# ? Sep 21, 2012 20:40 |
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karthun posted:You could do that but you would need to sequester then carbon somehow. Best way is probably to throw all of the wood and biomass into a subduction zone of the crust and let the mantle take care of it. Wood is sequestered carbon, you don't need to put it in the mantle.
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# ? Sep 21, 2012 20:55 |
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Paper Mac posted:Wood is sequestered carbon, you don't need to put it in the mantle.
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# ? Sep 21, 2012 21:04 |
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Rent-A-Cop posted:Trees are an incredibly slow and inefficient way to sequester carbon. If you want to do it with plants you're much better off using something fast growing like bamboo. The best biological sequestration method would probably be some kind of engineered algae. When it was done you could just liquify it and inject the whole mess down a deep hole somewhere. That's pretty much what the Aston Inventions carbon negative power plant does; except it uses the algae to produce heat (a natural by-product of algae growth) that drives a turbine to produce energy. The waste produced by dying algae is collected and retained as biochar that can be used as a fertilizer for even greater carbon-negativity. As for afforestation, there sure are some exciting - if extreme - options. How about afforesting the entire Sahara and the Australian Outback with Eucalyptus through artificial irrigation? Like I said, it's extreme in concept, but the link is to an actual, well sourced scientific paper showing why this is both possible and fairly affordable.
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# ? Sep 21, 2012 21:26 |
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Rent-A-Cop posted:Trees are an incredibly slow and inefficient way to sequester carbon. If you want to do it with plants you're much better off using something fast growing like bamboo. The best biological sequestration method would probably be some kind of engineered algae. When it was done you could just liquify it and inject the whole mess down a deep hole somewhere. That doesn't really have anything to do with putting trees in the mantle.
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# ? Sep 21, 2012 21:42 |
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Paper Mac posted:That doesn't really have anything to do with putting trees in the mantle.
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# ? Sep 21, 2012 21:57 |
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Strudel Man posted:(unrelated, but the dotted lines are listed as indicating one standard deviation distance from the mean, not two) The solid line is a mean of all the models. The upper dotted line is mean + std dev. The lower line is mean-std dev. From the 50's to the 70's the line follows the model mean (since that is when the models were first developed) From the 70's to ~2000 the observations followed the lower bound (mean-stddev) which means that it's still following the model with regard to error. It's like the 'cone' they project when predicting where a hurricane will hit. Except it bucked the predictions and made a sudden right turn.
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# ? Sep 22, 2012 01:26 |
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Sequestering carbon is all good and fine ,but before we do that and have it be of any effect, we're going to need to stop spewing so much carbon into the atmosphere. Problem is, we probably won't. The average person doesn't believe in climate change, or thinks "Hey, global warming is a good thing, winter will be more bearable!". And it will take a lot to change their minds. Especially since everybody's terrified of nuclear power. It might just be that I live in Alberta, the Texas of Canada, but the impression I get from most people I talk to is that caring about the environment is for faggots, and global warming won't have much effect until after we're dead, so why care? So I'll throw in my lot with the "mankind is doomed" side. Oh well. At least I can look forward to lynching oil company CEOs and people with huge pickup trucks. That should be pretty fun, beating a guy to death with his own truck-balls.
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# ? Sep 22, 2012 02:06 |
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McDowell posted:From the 50's to the 70's the line follows the model mean (since that is when the models were first developed) Strudel Man fucked around with this message at 06:06 on Sep 22, 2012 |
# ? Sep 22, 2012 06:04 |
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Sidakafitz posted:Sequestering carbon is all good and fine ,but before we do that and have it be of any effect, we're going to need to stop spewing so much carbon into the atmosphere. Problem is, we probably won't. The average person doesn't believe in climate change, or thinks "Hey, global warming is a good thing, winter will be more bearable!". And it will take a lot to change their minds. Especially since everybody's terrified of nuclear power. The fear is that we'll have to give up our comfortable lifestyles (read: exurban lifestyles and cheap energy) to mitigate the damage, and people naturally don't want to face that reality. Sure, there's a lot of money to be made in clean energy, but our consumption-based economy would naturally have to take somewhat of a hit if we priced in the environmental harm we cause. There's a lot of money to be lost by people who pollute and don't pay for their damage, so it's only natural they'll do everything in their power to prevent their businesses from taking the hit.
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# ? Sep 22, 2012 09:12 |
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quote:Venus's atmospheric mass is 93 times that of Earth, and 96.5% of it is carbon dioxide (compared to Earth's 0.038%). Even in the absolute worst case scenario, Earth isn't going to become Venus, full stop. Venus underwent a feedback loop at some point that caused it's oceans to all evaporate into it's current atmosphere. Put all of Earth's oceans into it's atmosphere (which will eventually happen irregardless of any other complications, thanks to the Sun's increasing luminosity, in a few billion years), and we'd mirror Venus quite nicely. But yeah, it's unlikely that we could do that much damage ourselves, and it's unlikely the Venus had a civilization on it that caused it's current state (...or had a civilization on it at all, for that matter).
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# ? Sep 23, 2012 10:44 |
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They're feeding cows cheerios because corn costs too much. This wasn't supposed to affect the first world so quickly!
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# ? Sep 23, 2012 19:51 |
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ErichZahn posted:They're feeding cows cheerios because corn costs too much. Do you have a link for me so I can read up on this? The cheerio part, not the corn not fertilizing part. edit: Found it http://www.csmonitor.com/USA/Latest-News-Wires/2012/0923/Candy-cereal-cookies-Farmers-keep-cows-going-on-creative-feed-alternatives Yiggy fucked around with this message at 20:01 on Sep 23, 2012 |
# ? Sep 23, 2012 19:58 |
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Sweet times for cows as gummy worms replace corn feed. :welp:
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# ? Sep 23, 2012 20:03 |
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Corn feed is already horrible to cows for a variety of health and nutritional reasons. I can't even imagine what gummy worms are going to do to them. I also somewhat question the health effects of people eating gummy worm cows.
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# ? Sep 23, 2012 20:39 |
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Political forecast savant Nate Silver is embroiled in a spat with Michael Mann over misrepresentation and alleged propagation of denialist memes in his new book. In a twitter battle Nate claim's Mann didn't properly read the book, Mann responds that Nate minces words and tries to play both sides.Michael Mann posted:FiveThirtyEight: The Number of Things Nate Silver Gets Wrong About Climate Change
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# ? Sep 25, 2012 01:32 |
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Stroh M.D. posted:As for afforestation, there sure are some exciting - if extreme - options. How about afforesting the entire Sahara and the Australian Outback with Eucalyptus through artificial irrigation? Like I said, it's extreme in concept, but the link is to an actual, well sourced scientific paper showing why this is both possible and fairly affordable. It doesn't seem like such a great idea to cover huge swaths of the planet with an oil-laden tree whose reproductive strategy is to burn so hot that they incinerate everything around them, then grow back first. The fires would be unprecedented in scale. MotoMind fucked around with this message at 05:45 on Sep 25, 2012 |
# ? Sep 25, 2012 05:38 |
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Rent-A-Cop posted:Trees are an incredibly slow and inefficient way to sequester carbon. If you want to do it with plants you're much better off using something fast growing like bamboo. The best biological sequestration method would probably be some kind of engineered algae. When it was done you could just liquify it and inject the whole mess down a deep hole somewhere. This bothered me, you dismissed a reasonable method of carbon sequestration without any real evidence in favour of an uncertain and technologically intensive fix. I actually dug up some numbers: Cost of carbon sequestration through trees: $0.10-$100 USD/metric ton of Carbon (from IPCC III section 4.5.1 http://www.grida.no/publications/other/ipcc_tar/?src=/climate/ipcc_tar/wg3/ , also check out the neat graph) Cost of sequestration through algae-based capture: Hard to find numbers, ~$30-50 USD/metric ton of CO2 (http://www.powerplantccs.com/ccs/cap/fut/alg/algae_co2_capture_costs.html) So the cost efficiency of carbon sequestration through trees is comparable and in some cases better than algae systems. Plus we already know that this approach can be scaled up (forests exist), while this is an unknown for algae and a lot of novel carbon capture methods. I'm not saying intensive forestation is all we need to do, there are obvious land use constraints and we should adopt a range of solutions. But to dismiss tree planting out of hand is just wrong.
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# ? Sep 25, 2012 08:44 |
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This is some "uniquely American" poo poo right here. I can only hope whatever idiots were dumb enough to do this lose their entire herd as a result and go out of business. The gummy worms cows love, the electrolytes plants need! Mercury_Storm fucked around with this message at 09:24 on Sep 25, 2012 |
# ? Sep 25, 2012 09:20 |
Dafte posted:Corn feed is already horrible to cows for a variety of health and nutritional reasons. I can't even imagine what gummy worms are going to do to them. I also somewhat question the health effects of people eating gummy worm cows. Is it wrong if I want some effect to exist just because the thought of news reporters uttering "gummy cow disease" with a straight face makes me laugh?
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# ? Sep 25, 2012 09:57 |
Yiggy posted:Political forecast savant Nate Silver is embroiled in a spat with Michael Mann over misrepresentation and alleged propagation of denialist memes in his new book. In a twitter battle Nate claim's Mann didn't properly read the book, Mann responds that Nate minces words and tries to play both sides. I'm hoping Nate will respond, but I have a feeling he won't.
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# ? Sep 25, 2012 13:14 |
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This years minimum arctic sea ice extent is at a record low:quote:This year’s minimum was 760,000 square kilometers (293,000 square miles) below the previous record minimum extent in the satellite record, which occurred on September 18, 2007. This is an area about the size of the state of Texas. The September 2012 minimum was in turn 3.29 million square kilometers (1.27 million square miles) below the 1979 to 2000 average minimum, representing an area nearly twice the size of the state of Alaska. This year’s minimum is 18% below 2007 and 49% below the 1979 to 2000 average. source: http://nsidc.org/arcticseaicenews/ Edit: I looked this up because I had a discussion with a friend of mine, where his argument centered on the antarctic gaining ice while the arctic was losing it. Turns out, the arctic is losing more ice in relative and absolute terms than the antarctic is gaining: http://nsidc.org/cryosphere/seaice/characteristics/difference.html (bottom of page) Struensee fucked around with this message at 13:35 on Sep 30, 2012 |
# ? Sep 30, 2012 13:20 |
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Didn't a gigantic portion of the ross ice shelf in Antartica calf off in 2010?
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# ? Sep 30, 2012 21:24 |
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Struensee posted:This years minimum arctic sea ice extent is at a record low: It's also key to know that while the extent is going down, it turns out most of our Passive Microwave-derived sea ice thicknesses algorithms have been OVERESTIMATING ice thickness. What multiyear ice is left is becoming thinner and more rotten than we thought. I'm holding fast to a bet that we'll see an ice-free Arctic summer by 2015 and then it will become very interesting very quickly, as that thick multiyear ice has had a role in lessening the extent loss in warmer summers. EDIT: because I said the opposite of what I meant. Geoid fucked around with this message at 00:26 on Oct 1, 2012 |
# ? Sep 30, 2012 21:46 |
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Geoid posted:It's also key to know that while the extent is going down, it turns out most of our Passive Microwave-derived sea ice thicknesses algorithms have been OVERESTIMATING ice thickness. What multiyear ice is left is becoming thicker and more rotten than we thought. Do you mean thinner? And yeah, from the charts that were posted a while back, it certainly looks like 2015 is the year it's going to happen.
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# ? Sep 30, 2012 22:47 |
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To lighten mood somewhat. "What ever happened to global warming eh?" STOP! https://www.youtube.com/watch?v=TQlHaGhYoF0
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# ? Sep 30, 2012 23:41 |
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Struensee posted:Do you mean thinner? And yeah, from the charts that were posted a while back, it certainly looks like 2015 is the year it's going to happen. Yep, changed.
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# ? Oct 1, 2012 00:26 |
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Have there been any scientific studies released that counter the theory that our current level of warming is related to a lull in volcanic activity, and that climate change will be resolved by a future increase in eruptions? This is the argument I most often hear from acquaintances on the skeptic side, and while I usually counter with the fact that volcanic cooling is temporary whereas C02 induced warming is cumulative and constantly quickening, it would be nice to have data on hand to support this.
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# ? Oct 5, 2012 15:58 |
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Mazzagatti2Hotty posted:Have there been any scientific studies released that counter the theory that our current level of warming is related to a lull in volcanic activity, and that climate change will be resolved by a future increase in eruptions? http://www.skepticalscience.com/coming-out-of-ice-age-volcanoes.htm Skeptical Science is really the "go to" for climate change counterarguments.
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# ? Oct 5, 2012 16:13 |
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# ? May 30, 2024 09:20 |
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There was frost on my car here in Omaha last night after work. Take that, liberal climate science never mind that we had snow in September last year, or that we'll be back up in the 60's on Monday and stay there and up into the 70's for the next 2 weeks at least. Last year saw a high of 75 on Thanksgiving Day, so we'll see how it goes this year. Perhaps we'll have the jet stream repeating it's "gently caress YOU ARIZONA AAAHAHAHAHA" antics this year and get just slightly chilly springtime temps all winter. poo poo's hosed up. October used to be goddamn ice storm month. We used to have loving water falling out of the sky so cold that it froze on contact with the ground. You'd have to deal with your loving sidewalk having a glaze of ice, while you were trying to scrape enough of it off your car to safely drive it - on roads similar to hockey rinks. Now? Ehhhhh frost, not even on the windshield, just on the roof of my car. And that's only because my car was parked in an open parking lot exposed to the wind.
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# ? Oct 6, 2012 11:30 |