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Earth United States Science

Rise In CO2 Has 'Greened Planet Earth' (bbc.com) 345

schwit1 quotes a report from BBC: Carbon dioxide emissions from industrial society have driven a huge growth in trees and other plants. A new study says that if the extra green leaves prompted by rising CO2 levels were laid in a carpet, it would cover twice the continental USA. Climate skeptics argue the findings show that the extra CO2 is actually benefiting the planet. But the researchers say the fertilization effect diminishes over time. They warn the positives of CO2 are likely to be outweighed by the negatives. The lead author, Professor Ranga Myneni from Boston University, told BBC News the extra tree growth would not compensate for global warming, rising sea levels, melting glaciers, ocean acidification, the loss of Arctic sea ice, and the prediction of more severe tropical storms. The new study is published in the journal Nature Climate Change by a team of 32 authors from 24 institutions in eight countries. A new study has also shown that ever since Americans first heard the term global warming in the 1970's, the weather has actually improved for most people living in the U.S. The study published in the journal Nature found that 80% of the U.S. population lives in counties experiencing more pleasant weather than they did four decades ago.
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Rise In CO2 Has 'Greened Planet Earth'

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  • by fustakrakich ( 1673220 ) on Tuesday April 26, 2016 @01:42AM (#51987701) Journal

    Yeah, if prefer mud and slush to nice powdery snow

  • by Patrick Kursawe ( 4264331 ) on Tuesday April 26, 2016 @02:37AM (#51987835)
    .... who cares if some island nations are wiped off the map or a few thousand people drown in Bangladesh?
    • by Qwertie ( 797303 )
      I always thought it was dumb that certain Canadian politicians would talk about global warming as though it were a bad thing for Canada. Huh? I like warmer weather - in Canada.

      But now I've moved to the Philippines. We recently had a high of 37 degrees in the shade - the temperature when fans stop cooling you and start warming you up. And the thing is, most people in this town can't afford air conditioning. Many of them don't have electricity. And among those with AC and electricity, some of them have to
      • by sg_oneill ( 159032 ) on Tuesday April 26, 2016 @05:03AM (#51988099)

        But now I've moved to the Philippines. We recently had a high of 37 degrees in the shade - the temperature when fans stop cooling you and start warming you up. And the thing is, most people in this town can't afford air conditioning. Many of them don't have electricity. And among those with AC and electricity, some of them have to work outdoors in the daytime.

        Try a month of 40c+ like we had a few years back in west australia. That was hellish.

        And the fun part is some of the areas in the north of australia had regular 50c days. Thats the point where people start dying without some sort of cooling.

        I should note the article states "Since we started talking about global warning in the 1970s" or something to that effect. No, we've been talking about it since the late 1800s when the greenhouse effect was first discovered and worried scientist started wondering if all the coal being sooted into the air from the industrial revolution might have unintended consequences. The science was always fairly solid. CO2 (and other gases like methane) absorb gases at various spectra, which then becomes either heat (warming) or disipates into kinetic energy (storms and general chaos). There has never really been any proposed new physics that would prevent this happening, nor reliable observations that it isn't, yet unfortunately a large population still thinks its this whacky idea invented by environmentalists in the 70s and then adopted by some spooky lizard people cartel looking to lie about physics for some reason nobody seems to be able to explain.So I still call it the greenhouse effect, because thats what it is.

        • What's more, the idea was not controversial until it was revealed that some powerful industries might need to change their ways and that the money trough of coal and oil extraction would have to be fenced off.

          When I was a child (in the 70s) I was fascinated by discoveries in the solar system and our neighbouring planets. Why was Venus hotter than Mercury, despite the latter being closer to the Sun? Well, it turns out the Venusian atmosphere has large concentrations of CO2, a known greenhouse gas, and this

      • Why does everyone forget that regardless of man made global warming we are still exiting a glacial period, the the earth will warm up on it's own, and we will eventually have to deal with that change even if we reduce our emissions to 0.

        Now on the other hand cheaper, cleaner, renewable resources should be our goal anyway.

      • Quick point of clarification...

        35 degrees in the shade is considered the temperature beyond which humans are likely to die from hyperthermia if exposed to the heat for several hours.

        However, this is 35C of wet-bulb temperature. This depends on dry-bulb temperature (what we normally use), relative humidity and air pressure.

        So it's not that 37C is the threshold. That'd require almost 90% relative humidity in the Phillipines where the norm seems to be between 60 and 80. At 80%, a dry temp of 38.5C would yie

  • by mentil ( 1748130 ) on Tuesday April 26, 2016 @02:54AM (#51987871)

    I get that CO2 is a greenhouse gas, but it seems like nearly all of the "society ought to do X" suggestions for combating climate change equate to "reduce CO2 emissions." However, CO2 isn't the only greenhouse gas; methane is barely mentioned except in reference to livestock emissions, particularly from ruminants; and water vapor is practically ignored. Why isn't anyone suggesting interfering with the water cycle? Water vapor is a major greenhouse gas. Alternatively, since clouds cause global cooling, why not a plan to increase cloud formation? It's known that decreased albedo in the poles will lead to them getting warmer, why not a plan to artificially increase albedo? White paint or whatever. When it comes to "plans that require decades, cooperation between most of the world, and trillions of dollars", why are we so laser-focused on this one plan to decrease CO2 emissions?* It seems to me that big problems tend to be solved with dozens of smaller solutions, rather than one big "hurray, it worked!" solution; true, there are many ways of producing energy aside from burning carbonaceous materials, but as I've mentioned above that's just attacking the issue from one angle.

    *I imagine a big part of the reason is "don't spend $billions on that, spend $billions on this (which I have a stake in) instead." But that doesn't fully explain the issue either, I think the 'call to arms' to rally scientists to consensus has caused a little too much groupthink, and bluesky ideas which should be seriously considered are being dismissed out of hand.

    • by religionofpeas ( 4511805 ) on Tuesday April 26, 2016 @03:08AM (#51987889)
      Methane is barely mentioned because it's overall greenhouse effect is much smaller than CO2. Water vapor is a major greenhouse gas, but hard to control, except by reducing global temperature.

      It's known that decreased albedo in the poles will lead to them getting warmer, why not a plan to artificially increase albedo? White paint or whatever

      Maybe, but it requires a credible plan. How do you intend for the paint to stick on the Arctic ocean ?

    • by WalksOnDirt ( 704461 ) on Tuesday April 26, 2016 @03:09AM (#51987891)

      ...methane is barely mentioned except in reference to livestock emissions...

      Methane is causing much less warming than carbon dioxide. It is a big worry for the future, though, and much attentions is being paid to it.

      Why isn't anyone suggesting interfering with the water cycle?

      Water vapor falls back to land very quickly. It can only cause local warming.

      ...since clouds cause global cooling...

      Clouds cause cooling by day but warming by night. The net effect varies by type of cloud. Too many clouds can interfere with growing crops.

    • Environmentalism (Score:5, Interesting)

      by monkeyxpress ( 4016725 ) on Tuesday April 26, 2016 @03:14AM (#51987907)

      The reason is that there are really two issues rolled into the climate change debate. The first is man-made warming itself. The second is environmental conservatism in general. What many climate campaigners would like is for humans to stop destroying our natural environment - cutting down forests, polluting rivers and lakes, that sort of thing. Many of the same people/organisations who were drumming on about environmental conservatism since before the climate change debate, simply used climate change as their latest vehicle to get their message out. Nothing wrong with that.

      However, the reason they don't want to talk about geo-engineering, is that if this is seen as a viable option, then the two issues separate again. In other words many people will see a much simpler third way which involves technology preventing global warming, while they continue burning oil and buying endless junk they don't really need.

      Sadly, humans being humans, it is likely that this third way will be the one we take. However, the biggest risk I see is that while us rich westerners just buy a few more air conditioners and argue about whether climate change is a thing or not, some country that is bearing the brunt of the problem decides to setup an aerosol plant and begin feeding something into the atmosphere that they think might fix the problem for them. I mean, if your country is starving due to drought, or sea level rise threatens to wipe you out, and the rich western countries are busy arguing about whether they should be able to have enormous cars or giant cars, you might just get desperate and do something risky for the planet.

      • Geo-engineeing is vastly more expensive then almost any proposed level of emissions reduction. No one talks about it because of that.

        • Geo-engineering also has substantially more unknowns -- a risk of unintended consequences which could be worse than global warming.

        • Geo engineering also does nothing to wean us off fossil fuels.
        • by iONiUM ( 530420 )

          You talk about geo-engineering like we *haven't* already been doing it for a hundred years. Climate change itself is geo-engineering, by humans. It wasn't intentional, but it happened.

          It is certainly do-able, and there are many ways to approach it. It doesn't have to be a sci-fi CO2 sucking machine that flies in the clouds.

    • by jbolden ( 176878 )

      Water vapor stays in the atmosphere on average for 9 days. The CO2 cycle is decades to centuries. CO2 by itself doesn't create heat, rather CO2 increases water vapor which increases heat. Vapor is the effect not the cause.

      • CO2 by itself doesn't create heat, rather CO2 increases water vapor which increases heat

        CO2 by itself does increase heat, which then increases water vapor, which amplifies it.

    • Yes. Let us play God with a system we barely comprehend. What we're doing now isn't bad enough so let's screw with the system deliberately.

    • I get that CO2 is a greenhouse gas, but it seems like nearly all of the "society ought to do X" suggestions for combating climate change equate to "reduce CO2 emissions." However, CO2 isn't the only greenhouse gas; methane is barely mentioned except in reference to livestock emissions, particularly from ruminants; and water vapor is practically ignored. Why isn't anyone suggesting interfering with the water cycle? Water vapor is a major greenhouse gas. Alternatively, since clouds cause global cooling, why not a plan to increase cloud formation? It's known that decreased albedo in the poles will lead to them getting warmer, why not a plan to artificially increase albedo? White paint or whatever. When it comes to "plans that require decades, cooperation between most of the world, and trillions of dollars", why are we so laser-focused on this one plan to decrease CO2 emissions?* It seems to me that big problems tend to be solved with dozens of smaller solutions, rather than one big "hurray, it worked!" solution; true, there are many ways of producing energy aside from burning carbonaceous materials, but as I've mentioned above that's just attacking the issue from one angle.

      *I imagine a big part of the reason is "don't spend $billions on that, spend $billions on this (which I have a stake in) instead." But that doesn't fully explain the issue either, I think the 'call to arms' to rally scientists to consensus has caused a little too much groupthink, and bluesky ideas which should be seriously considered are being dismissed out of hand.

      There are a lot of legitimate reasons that CO2 is more important to climate change over time than your alternatives. Water vapor stays in the air a short time, so taking it out of the atmosphere costs a lot of energy forever on. Clouds performance for climate change is still very nuanced and our modelling on it still isn't even entirely in agreement on whether they are a net positive of negative feedback. Albedo changes are easy to go overboard on.

      However, the truth is NOT that global leaders and policy adv

    • Water vapor is not ignored; if it were not for the water vapor feedback cycle CO2 would be a non-issue. The issue with water vapor is that there are vast reservoirs of it all around the planet, which we are not able to do much about. Also, your statement that clouds cause cooling is not quite correct: clouds contribute to both warming and cooling. [skepticalscience.com]

      Right now we are engaging in a massive uncontrolled geoengineering experiment: using CO2 to add energy to the Earth's atmosphere. Modeling the effects of this are

  • First it didn't exist. Now, it is benefitting the planet.
    We are slowly getting there.
    Some plant growth won't stop the global warming, though.
    Plants don't reflect the sunlight, and the growth is likely balanced by increased forest burnings, ice is still melting, sea level still rising. Obviously, it will be beneficial to the planet as a whole if shore cities are washed away.

  • Yet another bit of PR in the spin cycle when the old PR was shown to be bullshit.
  • by mentil ( 1748130 ) on Tuesday April 26, 2016 @03:46AM (#51987953)

    Once you're finished terraforming Earth, it will become habitable for intelligent life.
    Sincerely, Your Neptunian Overlords

  • Fortunately plants are a cheap way to combat global warming, they simply absorb more CO2 to grow bigger!

    Of course, since the greenhouse gasses are still building up, it takes more and more plant growth to keep up...

    Thus solving the problem once and for all! ...

    ONCE AND FOR ALL!!!

    • Fortunately plants are a cheap way to combat global warming, they simply absorb more CO2 to grow bigger!

      And then they rot or get eaten and the same amount of CO2 is released that they used in growing ...

  • You know you can't bring back a herd of triceratops and apatosaurus's without enough greens for them to eat. It's best to green up the planet and warm it up a bit too before inseminating a few elephants to kick the process off.

    Does Obama have a Mini-Me?

    LoB
  • Climate skeptics argue the findings show that the extra CO2 is actually benefiting the planet.
    I thought if they were "skeptics" they would argue there is no CO2 increase or there is no temperature increase ... so they admit an increase but argue it is good? Confused ...

  • by BlindRobin ( 768267 ) on Tuesday April 26, 2016 @06:29AM (#51988273)

    Yeah, the homeless guy wakes to notice that it is suddenly comfortably warm in the shelter he built from cartons just before he realises that it actually on fire from a discarded fag end...

  • by wonkey_monkey ( 2592601 ) on Tuesday April 26, 2016 @06:41AM (#51988309) Homepage

    Rise In CO2 Has 'Greened Planet Earth'

    Gah. Stop verbing adjectives. It really infuriationates me.

  • "twice the continental USA" doesn't say anything beyond lots and lots.
    Could we have that in standard units, please?
    Such as american football fields or Rhode Islands. Or leaves per tree.

  • It's good for the planet. But not for us. It's going to suck for us. Planet will survive though, no doubt about it.
  • A study conducted in California's San Joaquin valley has shown that the rising temperature increased cattle's digestive system activity; causing an increase in the level of scat.
  • by Roodvlees ( 2742853 ) on Tuesday April 26, 2016 @09:55AM (#51989341)
    "They warn the positives of CO2 are likely to be outweighed by the negatives."
    Like the negatives of CO2 are permanent. The increased green will mean more CO2 is taken out of the atmosphere.
    I never understood this panic about CO2, it's harmless, there are so many pollutants that are obviously harmful.

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