Fact:
The earth's mean temperature is rising. It has been rising more in the past century than it has within the last 1000 years or more.
Fact:
The warming trend is causing ice packs and glaciers to melt in Greenland, Antartica, Europe, and Asia. As the ice melts, more of the land and ocean are exposed to the direct rays of the sun. This accelerates the rate of warming on the planet.
Fact:
Within the last 100 years, and since the industrial revolution, humans have been expelling more CO2 into the air than they ever have in history.
Theory (most likely true):
There appears to be a direct correlation between the amount of CO2 in the atmosphere and the temperature on the planet. As the CO2 content in the atmosphere increases, the global temperature increases. Many geologists accept this as fact.
Conjecture:
Humans, because they are releasing CO2 into the atmosphere, are contributing to the rise in global temperatures. This was the conclusion of the Global Summit on Climate Change, and it was accepted by the Bush administration.
Most environmental scientists accept the fact that humans are contributing to the increase in global temperatures. The main discussion that is currently occuring in the scientific community related to this work is:
- How much are humans contributing?
- Can human behaviour reduce the rate of global warming?
- How can human's reduce the amount of greenhouse gases they are producing to slow the rate of global warming.
2007-06-08 10:20:25
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answer #1
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answered by Tunsa 6
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Some gases ("greenhouse gases") let sunlight in, which warms the Earth, and then block that heat from leaving. That's the "greenhouse effect", and it's a natural thing, mostly caused by water vapor.
Man is making excessive amounts of greenhouse gases, mostly by burning fossil fuels. That causes the delicate natural balance to go out of whack and the Earth warms. That's global warming.
It won't be a Hollywood style disaster. Gradually coastal areas will flood and agriculture will be damaged. But it will be very bad. Rich countries will cope, but it will take huge amounts of money. In poor countries many people will die of starvation, but not all of them.
Most scientists say, in 20-50 years. But we need to start right now to fix it, fixing it will take even longer than that.
More information here:
http://profend.com/global-warming/
Lots of numerical scientific data proving it real here:
http://en.wikipedia.org/wiki/Image:Climate_Change_Attribution.png
http://www.ipcc.ch/SPM2feb07.pdf
2007-06-08 10:25:33
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answer #2
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answered by Bob 7
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Fact:
The geological record indicates that as a result of higer temperatures, CO2 levels in the atmosphere have risen .
The associated CO2 rize is 800 years after the temperature rize. Never before has CO2 rize caused a temperature rize.
As he oceans heat, CO2 in solution with seawater is released into the atmosphere, like warm soda pop quickly becoming flat.
2007-06-08 14:47:18
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answer #3
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answered by Holden 5
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I stay interior of strolling distance of the Pacific Ocean, and that i've got lived here while the alarmists/leftists have been proclaiming international cooling. Over 30 years in the past they began chanting international warming and predicted that the place I stay could have a extreme upward push in ocean tiers, flooding lowlands, that could desire to ensue interior of twenty year or much less. That replaced into 25 years in the past and that i'm nevertheless waiting. no longer something has replaced, no longer the sea point, no longer the water temperature. The state climatologist, George Taylor, uncovered the rip-off, and he's a real scientist, no longer a flesh presser. The state governor study Taylor's checklist, and fired him, or tried to. Taylor wasn't politically ultimate. additionally, I studied Earth technology in college as a minor. additionally, i'm no longer new to technology; i've got spent my stay working in technology and technologies. All my acquaintances are scientists or technologists. So, do no longer repeat Al Gore's lies to me. This climate replace hoax runs alongside leftist political lines, and it extremely is fed by potential of liars and morons. have faith it!
2016-10-09 12:26:48
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answer #4
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answered by Anonymous
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Global warming is destructive to our environment.
The way of this is that it tears up our ozone with protects us from the harmful uv rays of the sun.
Global warming comes from chlorofluorocarbons which are like aersol sprays and air conditioning and car engines. These chlorofluorocarbons release molecules of chlorine which becomes harmful when it reaches the stratosphere.
2007-06-08 11:40:29
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answer #5
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answered by S81 5
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Tunsa's theory of global temperatures is messed up, the CO2 rise comes shortly after the temperatures rise.
Plus, CO2 is heavier than air, it sinks to the ground, so it might be trapping heat above ants, but not us.
2007-06-08 14:47:33
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answer #6
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answered by Anonymous
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Tunsa and Bob's answers were very good. If you want to read further details, I suggest you check out the following links.
Wikipedia entry on global warming:
http://en.wikipedia.org/wiki/Global_warming
The Intergovernmental Panel on Climate Change (IPCC) was established to evaluate the risk of climate change brought on by humans, based mainly on peer reviewed and published scientific/technical literature. Here is their most recent report summary:
http://ipcc-wg1.ucar.edu/wg1/Report/AR4WG1_Pub_SPM-v2.pdf
2007-06-08 11:04:01
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answer #7
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answered by Dana1981 7
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It is not happening . The green house gas that is supposed to be causing it is not there.
CO2 is taken care of by the plants and photosynthesis.
Methane the environmentalist published a lot of bad data on the gas. It seams that they didn't know that methane was lighter than air and if there is any it is 50 miles up.
2007-06-08 10:26:32
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answer #8
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answered by JOHNNIE B 7
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How to Fight Global Warming
Take these steps and you'll help reduce global warming
pollution.
--------------------------------------------------------------------------------
LEARN MORE
Global Warming Basics
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The biggest cause of global warming is the carbon dioxide released when fossil fuels like oil and coal are burned for energy. So when you save energy, you fight global warming (and save money, of course). Here are some easy steps you can take:
Raise your voice. We need new laws that will steer our nation toward the most important solutions to global warming -- cleaner cars and cleaner power plants. Send a message to your elected officials, letting them know that you will hold them accountable for what they do -- or fail to do -- about global warming.
Choose an efficient vehicle: A car that gets 20 miles per gallon will emit about 50 tons of carbon dioxide over its lifetime. A car getting 40 mpg will emit half that much. When buying your next car, pick the least-polluting, most efficient vehicle that meets your needs. Maybe it's an innovative hybrid that combines a gasoline engine with electric motors (and never needs to be plugged in). Or maybe it's a wagon instead of an SUV. And over the average lifetime of an American car, a 40-mpg car will save roughly $3,000 in fuel costs compared with a 20-mpg car, so compare fuel economy performance before you buy. (See www.fueleconomy.gov's Find and Compare Cars feature.)
Drive smart. Get your engine tuned up and keep your tires inflated -- both help fuel efficiency. If all Americans kept their tires properly inflated (and a government study shows that many don't), gasoline use nationwide would come down 2 percent. A tune-up could boost your miles per gallon anywhere from 4 to 40 percent; a new air filter could get you 10 percent more miles per gallon.
Drive less. When possible, choose alternatives to driving (public transit, biking, walking, carpooling), and bundle your errands together so you'll make fewer trips.
Buy energy-efficient appliances. Use your consumer power when buying appliances by shopping for energy-efficient models. You may spend a little more up front, but you'll save a lot on electricity, and you'll reduce pollution produced by power plants. Look for the Energy Star label, which identifies the most efficient appliances. You can also use the Energy Guide labels to compare the efficiency of specific models. Remember that refrigerators consume the most electricity in the home. Today's refrigerators consume less than one-fourth the energy of models built 30 years ago, so an upgrade could mean huge energy savings for your household. Click here for more energy-saving tips.
Replace your light bulbs with compact fluorescent bulbs. While compact fluorescents are initially more expensive than the incandescent bulbs most people use, they last 10 times as long. What's more, a compact fluorescent will lower your energy bills by about $15 a year, and by more than $60 during its life. It will also keep half a ton of carbon dioxide out of the air.
Weatherize your home or apartment. For a very small investment, you can cut your heating and cooling expenses and reduce the burning of fossil fuels. Use weatherstripping to seal drafts around windows and doors. If a draft comes through electrical outlets or switches on outside walls, install foam draft blockers behind the cover plates. Use covers (inside or outside) on air conditioners during cold months. And make sure your home has adequate insulation. Many older homes don't have enough, especially in the attic. You can check the insulation yourself or have it done as part of an energy audit, provided by many utility companies. Call your company to see if it offers this service.
Choose renewable energy. If you live in a state where you can choose your electricity supplier, pick a company that generates at least half its power from wind, solar energy and other clean sources. Even if you don't have the option to select a supplier, you may still be able to support renewable energy through an option on your electricity bill. For details, see NRDC's guide to buying clean energy.
Buy clean energy certificates. Another way to help spur the renewable energy market and cut global warming pollution is to buy "wind certificates" or "green tags," which represent clean power you can add to the nation's energy grid in place of electricity from fossil fuels. For information, see Green-e. And here's an innovation that's catching on: calculate the global warming pollution associated with your everyday activities, then buy enough certificates to offset them and become "climate neutral." Two places to learn how: NativeEnergy's WindBuilderssm program and Bonneville Environmental Foundation's Green Tags program. (NRDC worked with these two groups to make our February 2003 Rolling Stones concert to raise awareness about global warming climate neutral.)
Join NRDC/use our resources. You can help secure the changes that will stop global warming by joining NRDC, one of the most effective environmental groups in the country. And we can help you be more effective in your own environmental efforts by giving you information and action tools, and by combining your voice with hundreds of thousands of others. So take your pick, or pick them all: become a member of NRDC, join our Earth Activist Network to receive email action alerts, visit our online action center, read our green living pages.
2007-06-08 15:06:16
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answer #9
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answered by RichSTCharles 3
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....I think the scientists are in a better position to answer the
question. We have plenty of scientists in the world, they need
to suggestions, if possible.
2007-06-08 10:27:47
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answer #10
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answered by maximo f 1
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