Nuclear Energy
Advantages
o Since the Earth has limited supplies of coal and oil, nuclear power plants help to produce energy regardless of the supply of coal or oil.
o Nuclear energy accounts for around 17% of the world’s electricity needs, and helps to improve the economic growth of countries by providing power for new industrial technologies. Also, it is used to help meet the needs of the world’s growing populations and expanding economies.
o Nuclear power plants only requires a ton of uranium to produce far more energy compared to the burning of millions of tons of coal or oil.
o The burning of coal and oil pollute the air with greenhouse gases and contaminants. Nuclear energy does not, hence it serves to reduce global warming.

Disadvantages
• Nuclear explosions produce radiation, that harms the bodies of humans.
• Nuclear reactors have waste disposal problems. As they produce nuclear waste products that emit radiation, these could harm the people who touch them. Hence, they have to be carefully handled with and stored in special cooling pools at nuclear reactors.
• Nuclear reactors only last for about forty to fifty years.

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You mentioned that "The excess build up of carbon in Antarctica causes there to be a hole in the ozone layer." Where did you get this information from? Can you verify it?

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Thankyou.

(Michelle Ho, 1Co9)

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The Greenhouse Effect is the process where greenhouse gases in the atmosphere, like carbon dioxide, trap heat to keep the surface of the earth at a constant temperature. However, man is causing the change by burning nature's vast stores of coal, oil and natural gas. This releases billions of tonnes of carbon dioxide every year, although the changes may actually have started with the dawn of agriculture, say some scientists. This increase in the Carbon Footprint created by man, which ultimately increases the amount of greenhouse gases trapping heat, more and more heat is being trapped in the atmosphere, thus causing Global Warming. Global warming leads to Climate Change, which is caused when the temperature of the surface of the earth increases and brings about swift, abrupt changes to climate, weather and even natural disasters. Even today, there are more and more natural disasters linked to temperature, like droughts and flood.
Water-borne diseases, and diseases spread by water-based vectors like mosquitoes, are on the march. Dengue fever, Japanese encephalitis, yellow fever and other diseases that were once under control are now resurgent. Now an analysis of more than 300 human diseases has found that the distribution of pathogens worldwide is strongly linked to climate, and that climate change could lead to a massive increase in human vector-borne disease.
Rise in sea levels would flood huge swathes of the Earth's most densely populated regions, says an unpublished report from the world's top climate scientists. Caused in large part by the melting of Greenland's ice sheet, this process would take a thousand years or more but would be "irreversible" once underway. The world’s governments are reading the report about this issue. The final draft seen by New Scientist suggests that dozens of the countries meeting this week to agree on global warming limits through the Kyoto Protocol may face being wiped off the world map.

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This thread is an invitation to students to give your feedback and suggestions to the Attachment Programme. Too short? Too long? Too hectic? Are there other jobs/institutions that you would like to be attached to?

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