the effects could be enormous
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The effects could be enormous. Relative to the hectic pace of your daily life, global
warming is a slow-moving problem. But that does not mean you should "wait and see"
what happens. If we wait, we may be creating an unsolvable problem, an unstoppableclimatic shift that could have devastating impacts in years to come.
The majority of effects will be devastating to human and animal populations. Aninsecure food supply, increased frequency and intensity of storms, and rapidly rising sea
levels are just a handful of the possible effects you will see in coming years. But it isn'ttoo late. You can eventake action right nowto help stop global warming!
Destroying Earth As You Know It
The effects could be far greater than you imagine. Global warming does not occur evenly
across the world. Temperature changes have been, and will be, much more extreme in theArctic and Antarctic. A 5 degree Fahrenheit warming for the whole world means only 1
degree at the equator, but 12 degrees at the poles.[1] Global temperatures have already
risen about .8 degrees Celsius, or 1.4 degree Fahrenheit.[2]
The arctic tundra is melting already, which may be causing an increase in methane
levels in the atmosphere. A mysterious spike in atmospheric methane was measured in
2007.[3] In addition, the rate of carbon increase in the atmosphere is accelerating each
year, which may also be related to the thawing of arctic areas. You may be contributingto a positive feedback loop whereby the warming of polar regions puts more carbon and
methane into the atmosphere, thus causing yet more warming in an unstoppable cycle.
Dangerous Weather Patterns
Increased storm activityand intensity is caused by global warming. Did you know in thelast several years, eveninsurance companies have faced regular, increasing costs from
these types of storms? Sadly, you are likely to see the ravages of global warming induced
weather on the economy become yet more severe in the future.
Severe drought and flooding will occur as weather pattern become more extreme.Unfortunately, the world's economic and agricultural systems rely on existing patterns of
weather, and as global warming changes these patterns, our ability to produce food is
declining.
The overall trend is clear, regardless of knowing if any particular weather change was"caused" by global warming. Increased overall average temperatures cause more extreme
weather, more devastating storms, and more severe and prolonged droughts and floods.
These changes impact ecosystems and the human economy.
Unstable Agriculture and Economy
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The price you pay for food is getting higher already as a result ofglobal warming effects
on agriculture. What's worse is that this is leaving many of the world's hungry in a
desperate situation, unable to afford adequate food. In the future, it could make it so hardfor humans to grow enough food that even wealthy people experience food scarcity.
We depend on a predictable climate to keep our agricultural markets and our economyas a whole stable. Climate change makes our markets unstable, less efficient, and thus
more expensive. Prices are increasing for a number of reasons, a few of which are notrelated to global warming, but global warming induced heat waves have already been
shown to reduce grain harvests in India, Canada, and the U.S. significantly.[4]
Drought conditions have doubled since 1970.[5] Many plants become less productive
or will not pollinate when it gets too hot.[6] For all of these reasons, we should beconcerned about the impacts of climate change on agriculture and food scarcity.
Effects on Animals
The danger to animals is severe as well. As sea levels rise and lowland coastal areas areflooded, many animal species will be harmed. Coastal areas serve as natural hatcheries
for fish and are home to a greater diversity of land and sea creatures than any other
ecosystem. The flooding of coastal estuaries by rising sea levels would have dramatic
effects on animalsacross the world.
Countless species will be wiped out if global warming continues unchecked. It could
play a major role in the extinction of many species that are crucial to stabilizing the food
chain that you and I (and countless other animals) depend on for our food. It will surely
mean an end to the polar bear, which depends on sea ice for hunting.[7]
A Hostile Planet
For Your Children
A 20-foot sea level rise is likely if either the Greenland Ice Shelf or the East Antarctic IceShelf were to melt and slip into the sea.[8] You may think a 20-foot rise in sea level is
unlikely, but even a relatively small rise in sea levels could have an enormous impact on
people around the world. For example, in Bangladesh, 15 million people live within 1meter of sea level and in India, the number of people at a similar elevation is 8 million.
[9]
The changes have been extreme, developing far faster than anyone foresaw, despite the
fact that scientists have been predicting that significant rises in sea level could onlyhappen decades or centuries in the future. In the summer of 2007, the ice in the Arctic
receded further than any of the climate models had predicted.
This is significant, because as white arctic ice is replaced by dark water (or land, in the
case of tundra), our planetabsorbs more heat. The reason for this is ice reflects more light
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and heat than do water and land, something scientists refer to as the "albedo effect." The
albedo effect of ice is believed to have had a major impact on Earth's climate over the
eons and the loss of albedo could accelerate the warming of the Earth significantly. All ofthis means an ever moredangerous future for your kids.
The Full Effects on Humans
If the current trend continues and warming at the poles triggers a positive feedback loop
whereby more carbon and methane are released into the atmosphere, then the 20-foot sealevel rise could come much sooner than was previously predicted. Such a change would
inundate many of the world's largest cities and much of the world's most productive
farmland.
The consequences could be devastating. In addition, much more dramatic sea levelrises in the future are possible. If global warming catalyzes further warming and melts all
of the ice in the arctic regions and at high altitudes, sea levels will rise by 230-260 feet.
[10]
Earth could be drastically altered. The Earth might even come to resemble the steamy
planet that was ruled by the dinosaurs! The harm to human populations and civilization
would be incalculable.
But you can help. As an individual you have more power than you can imagine to helpsolve this problem. Do you know how?
Global warming is the increase in the average temperatureofEarth's near-surface air
and oceans since the mid-20th century and its projected continuation. According to the
2007 Fourth Assessment Reportby the Intergovernmental Panel on Climate Change(IPCC), global surface temperature increased 0.74 0.18 C(1.33 0.32 F) during the
20th century.[2][A] Most of the observed temperature increase since the middle of the 20th
century has been causedby increasing concentrations ofgreenhouse gases, which resultfrom human activity such as the burning offossil fuel and deforestation.[3]Global
dimming, a result of increasing concentrations of atmospheric aerosols that block sunlight
from reaching the surface, has partially countered the effects of warming induced by
greenhouse gases.
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