global warming

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By: yingzi (156 month(s) ago)


By: jyothi.authorstrea (156 month(s) ago)

very good work

By: muthuswamy1 (149 month(s) ago)

it is good. can i get the ppt file for my lecture? narayanan.india


Presentation Transcript

PowerPoint Presentation:

What is Global Warming? Carbon dioxide and other gases warm the surface of the planet naturally by trapping solar heat in the atmosphere. This is a good thing because it keeps our planet habitable. However, by burning fossil fuels such as coal, gas and oil and clearing forests we have dramatically increased the amount of carbon dioxide in the Earth’s atmosphere and temperatures are rising.

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The vast majority of scientists agree that global warming is real, it’s already happening and that it is the result of our activities and not a natural occurrence. 1 The evidence is overwhelming and undeniable

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We’re already seeing changes. Glaciers are melting, plants and animals are being forced from their habitat, and the number of severe storms and droughts is increasing.

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“Diesel takes on global warming as only they can… making their latest campaign poignant yet subtle, stylish yet absurd. Focusing on people and places… and claiming that “GLOBAL WARMING CANT STOP OUR LIVES” ~ and thus begins the series of images below, about how although the polar ice caps are melting, etc you can still look good and embrace the heat… “

Now back to reality…:

Now back to reality…

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The rapid temperature increase is very similar to the rapid world population increase. Last 200 Years Earth Temperature and Population Data

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No charts or graphs here; just an ominous reminder that the polar bear's habitat is literally floating away. And that ours will follow suit.

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The number of Category 4 and 5 hurricanes has almost doubled in the last 30 years. 2

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Glacier in Patagonia, Argentina 1928. Glacier in Patagonia, Argentina 2004. 76 years of climate change. Then, and now

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Hurricanes aren't the only severe weather conditions that global warming stirs up—massive dust clouds like this one are becoming more frequent, and more violent, in regions like Southern Africa.

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How can we cut global warming pollution? By reducing pollution from vehicles and power plants. Right away, we should put existing technologies for building cleaner cars and more modern electricity generators into widespread use. We can increase our reliance on renewable energy sources such as wind, sun and geothermal. And we can manufacture more efficient appliances and conserve energy.

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W aterfall spouting from the ice edge of Brasvell Glacier. Glaciers in the Arctic aren't supposed to do that. Glacial waterfalls like this one have been erupting with alarming frequency in Arctic regions--and is as good an image as any to wrap this slide show with. After all, when centuries-old chunks of ice start melting in the Arctic , it's hard to deny we've got ourselves a big problem.

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