7:24 AM
Tuesday, August 26, 2008
Global warming
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Why is global warming happening?
Human industry and other activities like driving cars produce greenhouse gases, such as carbon dioxide. These gases are a natural part of the atmosphere and help trap heat from the sun, which allows life to exist on Earth. However, human activities during the last century drastically have increased the amount of greenhouse gases in the atmosphere. This has caused more heat to be trapped by the atmosphere, which is leading to the gradual rise in temperature all around the world.
Why does global warming matter?
Increased temperatures are changing regional climates and resulting in droughts, more intense storms, and drastic flooding, which would force millions of people to leave their homes if coastal areas become flooded. Climate changes also will affect animal and plant life, potentially impacting fishing, agricultural, and other food industries. Put together, these changes and disasters could affect billions of people, especially in the world’s poorest countries.
