Wednesday, August 13, 2008

What is global warming?

What is - Global Warming?

"Global Warming is defined as the increase of the average temperature on Earth. As the Earth is getting hotter, disasters like hurricanes, droughts and floods are getting more frequent.

Over the last 100 years, the average temperature of the air near the Earth´s surface has risen a little less than 1° Celsius (0.74 ± 0.18°C, or 1.3 ± 0.32° Fahrenheit). Does not seem all that much? It is responsible for the conspicuous increase in storms, floods and raging forest fires we have seen in the last ten years, though, say scientists.

Their data show that an increase of one degree Celsius makes the Earth warmer now than it has been for at least a thousand years. Out of the 20 warmest years on record, 19 have occurred since 1980. The three hottest years ever observed have all occurred in the last eight years, even." -- Knowledge Allianz

Now you might have an idea on why I picked future generation as my sub topic. We all know how harmful it is when the sun gets too hot. We can get all kinds of sickness like skin disease/cancer, burnt skin, and so on.

"Ultraviolet (UV) light rays emitted by the sun are the cause of damage to our skin. This damage may be visible as age spots, fine (or not so fine) lines or simply as skin that has lost its elasticity eg hands that have lost their youthful suppleness.

There are two types of UV rays. UVA rays primarily cause an ageing effect on the skin and UVB rays primarily cause burning. The amount of UV reaching the earth's surface varies depending on factors such as the time of year, the time of day, the weather, the amount of ozone in the atmosphere and the altitude.

...Sunburn occurs when skin has not been sufficiently protected from the sun's UV rays, when the body is unable to produce enough melanin to protect the skin. Sunburn destroys cells on the skin's outer layer, the epidermis. In most cases these burns are minor, causing red, tender, sometimes blistered skin that sheds or 'peels' after several days." -- Unilever

It doesn't just sound harmful - it IS! Especially to our young future generation ; the babies, the toddlers, and the ones who are still in their mother's big bellies. What have they done to deserve this? They have yet to do anything to harm the Earth yet!

This is what I know about global warming. :]

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