Global Warming

Global Global WarmingWarming

DefinitionDefinition Global warming refers to an average Global warming refers to an average

increase in the Earth's temperature, increase in the Earth's temperature, which in turn causes changes in which in turn causes changes in climate. A warmer Earth may lead to climate. A warmer Earth may lead to changes in rainfall patterns, a rise in changes in rainfall patterns, a rise in sea level, and a wide range of sea level, and a wide range of impacts on plants, wildlife, and impacts on plants, wildlife, and humans.humans.

Causes of Global WarmingCauses of Global Warming Natural CausesNatural Causes

Release of methane gas from arctic tundra Release of methane gas from arctic tundra and wetlands.  and wetlands. 

Volcanic EruptionsVolcanic Eruptions

Large volcanic eruptions can throw so Large volcanic eruptions can throw so much dust into the sky that the dust acts much dust into the sky that the dust acts as a shield to solar radiation and causes a as a shield to solar radiation and causes a cooling trend in the atmosphere.  cooling trend in the atmosphere. 

Man-made Causes of Global WarmingMan-made Causes of Global Warming

Pollution is one of the biggest man-Pollution is one of the biggest man-made problems.  made problems. 

Burning fossil fuels is one thing that Burning fossil fuels is one thing that causes pollution. causes pollution. Fossil fuelsFossil fuels are fuels formed by  are fuels formed by natural resources such as anaerobic natural resources such as anaerobic decomposition of buried decomposition of buried dead organisms.dead organisms.Examples of Fossil fuels are:* Coal, Examples of Fossil fuels are:* Coal, petroleum and natural gas.petroleum and natural gas.

Another major man-made cause of Another major man-made cause of Global Warming is population.  Global Warming is population.  More people means more food, and More people means more food, and more methods of transportation more methods of transportation

The green house gases like carbon The green house gases like carbon dioxide, methane, and nitrous oxide are dioxide, methane, and nitrous oxide are playing hazards in the present times. playing hazards in the present times. These green house gases trap heat in These green house gases trap heat in earth’s atmosphere and thus result in earth’s atmosphere and thus result in increasing the temperature of earth. increasing the temperature of earth.

The major source of carbon dioxide is the The major source of carbon dioxide is the power plants. These power plants emit power plants. These power plants emit large amounts of carbon dioxide produced large amounts of carbon dioxide produced from burning of fossil fuels for the purpose from burning of fossil fuels for the purpose of electricity generation. Coal is the major of electricity generation. Coal is the major fuel that is burnt in these power plants. fuel that is burnt in these power plants.

Causes of Global warmingCauses of Global warming DeforestationDeforestation Use of CFC’s in Refrigeration, Use of CFC’s in Refrigeration,

perfumes and deodorants.perfumes and deodorants.CFC’s destroy the Ozone layer.CFC’s destroy the Ozone layer.

Global Warming effectsGlobal Warming effects Spread of diseaseSpread of disease  

As northern countries warm, disease As northern countries warm, disease carrying insects migrate north, bringing carrying insects migrate north, bringing plague and disease with them. Indeed plague and disease with them. Indeed some scientists believe that in some some scientists believe that in some countries thanks to global warming, countries thanks to global warming, malaria has not been fully eradicated.malaria has not been fully eradicated.

Warmer waters and more hurricanesWarmer waters and more hurricanes  As the temperature of oceans rises, so will As the temperature of oceans rises, so will the probability of more frequent and the probability of more frequent and stronger hurricanes. stronger hurricanes. 

Increased probability and intensity of Increased probability and intensity of droughts and heat wavesdroughts and heat wavesAlthough some areas of Earth will become Although some areas of Earth will become wetter due to global warming, other areas wetter due to global warming, other areas will suffer serious droughts and heat will suffer serious droughts and heat waves.  waves. 

Polar ice caps meltingPolar ice caps melting    It will raise sea levels. It will raise sea levels. Melting ice caps will throw the global Melting ice caps will throw the global ecosystem out of balance. ecosystem out of balance. The ice caps are fresh water, and when The ice caps are fresh water, and when they melt they will desalinate the ocean, they melt they will desalinate the ocean, or in plain English - make it less salty.  or in plain English - make it less salty. 

Global Warming solutionsGlobal Warming solutions Even if we stopped emitting Even if we stopped emitting

greenhouse gases today, the Earth greenhouse gases today, the Earth would still warm by another degree would still warm by another degree Fahrenheit or so. But what we do Fahrenheit or so. But what we do from today forward makes a big from today forward makes a big difference. difference.    

Personal Solutions to Global WarmingPersonal Solutions to Global Warming

Plant a tree. Plant a tree. Replace frequently used light bulbs Replace frequently used light bulbs

with compact fluorescent bulbs. with compact fluorescent bulbs. Don't leave the water running. Don't leave the water running. Buy paper products that use recycled Buy paper products that use recycled

paper. paper. Switch off the lights, fans, AC’s, Switch off the lights, fans, AC’s,

computers when not in use.computers when not in use. Choose products that come with little Choose products that come with little

packaging packaging

Reuse your shopping bag Reuse your shopping bag Reduce waste Reduce waste Eat less meat Eat less meat Drive carefully and do not waste Drive carefully and do not waste

fuel fuel When it is time for a new car, When it is time for a new car,

choose a more fuel efficient choose a more fuel efficient vehicle vehicle

In summary the best solution to In summary the best solution to stop global warming is to plant stop global warming is to plant massive amounts of trees, and massive amounts of trees, and we need to drastically reduce we need to drastically reduce emissions. There really is no emissions. There really is no other secret recipe to stop global other secret recipe to stop global warming and find a solution. warming and find a solution. Incredible new technologies are Incredible new technologies are needed and we need to take needed and we need to take better care of our environment.better care of our environment.

Thank YouThank You