facts about global warming.........• Since the 1860s, increased industrialization and shrinking forests have helped raise the atmosphere's CO2 level by almost 100 parts per million—and Northern Hemisphere temperatures have followed suit. Increases in temperatures and greenhouse gasses have been even sharper since the 1950s.
Water vapor is the most important greenhouse gas. Carbon dioxide, methane and nitrous oxide also contain heat and help keep Earth's temperate climate balanced in the cold void of space. Human activities, burning fossil fuels and clearing forests, have greatly increased concentrations by producing these gases faster than plants and oceans can soak them up. The gases linger in the atmosphere for years, meaning that even a complete halt in emissions would not immediately stop the warming trend they promote.
• In the Arctic the impacts of a warming climate are being felt already. Coastal Indigenous communities report shorter periods of sea ice, which fails to temper ocean storms and their destructive coastal erosion. Increased snow and ice melt have caused higher rivers while thawing permafrost has wreaked havoc with roads and other infrastructure. Some communities have had to move from historic coastline locations.
Sea ice loss is devastating for species that have adapted to the environment, such as polar bears and ringed seals in the Arctic and Antarctic penguins.
• Studies show that many European plants now flower a week earlier than they did in the 1950s and also lose their leaves 5 days later.
Biologists report that many birds and frogs are breeding earlier in the season. An analysis of 35 nonmigratory butterfly species showed that two-thirds now range 2 to 150 miles (3.5 to 240 kilometers) farther north than they did a few decades ago.
• By 2050, rising temperatures exacerbated by human-induced belches of carbon dioxide and other greenhouse gases could send more than a million of Earth's land-dwelling plants and animals down the road to extinction, according to a recent study.
• Coral reefs worldwide are "bleaching". losing key algae and resident organisms, as water temperatures rise above 85 degrees Fahrenheit (29.5 degrees Celsius) through periods of calm, sunny weather. Scientists worry that rapid climate change could inhibit the ability of many species to adapt within complex and interdependent ecosystems.
• The effects of a warming globe may not be entirely negative. Heating costs could decline for those in colder climates, while vast marginal agricultural areas in northern latitudes might become more viable. Arctic shipping and resource extraction operations could also benefit—summer sea ice breakup in Hudson Bay already occurs two to three weeks earlier than it did half a century ago.
But many species could be hit hard—including humans. The most vulnerable are peoples living in the far North, those perched along the world's coasts, and millions dependent on subsistence agriculture subject to the vagaries of a changing climate.
2006-07-30 15:55:32
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answer #1
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answered by tough as hell 3
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I'm lovely certain that Republicans don't deny that there was a sun recreation-pushed international warming for a few centuries after the final mini ice age, and they don't contest the truth that the Earth undergoes periodic and cyclic warming and cooling levels. These all are uncontested info. It's the to this point unproved and unsubstantiated quasi faith of anthropomorphic local weather difference (was once international warming, however it stopped warming while the sun recreation died down). The extra empirical local weather information that's amassed, the fewer and not more it helps the AGW faith. And the contemporary information (unmanipulated through the actual believers) suggests that there hasn't been any statistically big warming ago 10 years, in spite of the AGW items that exhibit that it must have risen. (Good items, eh?)
2016-08-28 15:23:52
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answer #2
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answered by ? 4
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sigh......show me the site where you have tracked back over 100 years and found this summer to be the worst? I've been to the NWS (National weather service) and yes it's hot but not the worst in most spots. The funny thing was their site even talked about how Al Gored lied with his stats. Nobody is denying global warming, what the big debate is as to what is causing it. How can you fix something if you don't know what causes it. Most credible scientist believe we are just in a cyclic weather pattern. So what do you want us to do about that? George is good, but he don't control the climate. I'm not denying anything, but give me some evidence.
2006-07-30 15:47:56
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answer #3
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answered by Anonymous
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The Earth has had cooling and warming periods for all it’s 4 billion years. The ice ages were the cooling periods and between them were the warming periods. This all happened before the tech and will continue to happen. We puny humans can’t stop it, and we can’t slow it either. Did you fail 9th grade science class? All this global warming stuff is just total BS! It's a natural cycle of the planet. It always has been and always will be !
2006-07-30 16:57:19
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answer #4
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answered by Anonymous
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It's easier to listen to the popular press (The Star, The Enquirer, books by Michael Crichton) and the ranting of politicians who live and die by oil (Inhoff) than to read a peer-reviewed journal or pay attention to an internationally respected conference of climate scientists.
To everyone who says "it's all a cycle", analysis of Antarctic ice cores reveals that the CO2 levels are 100-200% higher than they have been in 650,000,000 years (14 ice ages). Temp is trending up at the same rate.
To everyone who says "they were screaming 'ice age' before", it's all related. Global climate changes affect weather cycles. Polar ice caps melt, it reduces the salinity of the north atlantic, which screws up the global ocean currents. That could easily trigger an ice age -- remember the earth is going to try to reach stasis.
2006-07-30 16:06:08
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answer #5
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answered by franson 4
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Who caused the ICE AGE??? Back in the 70's they worried about Global Cooling fearing another Ice Age. If Science came out tommorrow and said the SUN is the sole reason behind Global warming What do we do then????? This world has been around for MILLIONS of years and survived every single thing this solar system has tossed its way. If Global warming is actually happening. Theres Nuttin we can do to prevent it.
2006-07-30 15:44:52
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answer #6
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answered by Anonymous
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Maybe because they are all rich SOBs who go from their air-conditioned house to their AC'd car to their AC'd office and back again, so they never really DEAL with the heat -- not like us folks here in northern Minnesota who are melting because almost nobody here even has AC -- until now we never needed it. Whoever heard of it being 100 degrees in DULUTH????? Or Intenational Falls on the Canadian border? We have broken every record this month. But Republicans don't live in this world --t hey live in a distorted parallel universe...
2006-07-30 15:50:19
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answer #7
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answered by Anonymous
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It's simple. Because in the 70s, the same people who are screaming "Global warming!" were screaming "ICE AGE!"
So we've had hot temps. This happens sometimes. Scientists are calling the US drought the third worst in the last century. How do we know that it's not going to start cooling off soon?
Of course we should take care of the earth, and conserve materials so they'll be here for our grandchildren. But should we panic? Nah.
2006-07-30 15:48:17
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answer #8
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answered by The_Cricket: Thinking Pink! 7
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Well for one, there is no reason to believe its not cyclical. I mean who burned all the oil that ended the ice age? Wasn't there a heat wave in medieval times? What caused that one?
Granted there are some environmentally disastrous behaviors that we should do our best to stop (de-forrestation comes to mind), but restrictions on citizens should be enacted only after a thorough analysis of the potential benefits and costs.
2006-07-30 15:49:45
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answer #9
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answered by CHEVICK_1776 4
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Maybe record breaking heat to us, but what about the heat before records were kept. And I personally don't believe in global warming, because I don't believe that God would let a bunch of glaciers melt and flood the whole Earth. Because, He promised he wouldn't. There are democrats who will tell you the same stuff, its not just republicans.
2006-07-30 15:45:27
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answer #10
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answered by Anonymous
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Prove that man has contributed to global warming and I will believe it, but it has yet to be proven...since the last ice age the earth has heated up...that is the only fact. Record breaking based on what data....200 years of data...come on, how long has man been on the earth. You know what...climates change in history...do some of your own research and you will see that most Global Warming theories have been disproven...hence the word THEORY.
2006-07-30 15:44:40
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answer #11
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answered by jpxc99 3
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