Atmosphere And Weather

Investigating Recent changes in Weather Patterns



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"Investigating Recent changes in Weather Patterns"
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Perhaps what we think as global warming is merely a return to a normal climate for earth. As taught by science, thousands of years ago dinosaurs and other great lizards roamed the earth. Fossils containing palm leaves, prehistoric insects, and small reptiles were found in rocks, proving that dinosaurs once roamed in North America. The earth's climate had to be humid, lush and tropical for the dinosaurs survival since they were cold blooded creatures. These creatures survived and flourished in a climate that never saw snow, ice or cold, until the coming of the ice age.
According to scientific information, the ice age was a chain reaction of the bombardment of earth by gigantic meteorites. One belief is that one or more of these meteorites carved out the National Grand Canyon. As these meteors pounded into the earth, billions of tons of dust and debris were tossed into the air. Day became night, as the sun was hidden from view. Temperatures dropped quickly and sheets of ice and glaciers moved over the earth's surface, destroying everything in its path. Mammoth elephants and many various species of dinosaurs became trapped and encased in ice, and those that managed to escape, mutated for survival.
The debris in the atmosphere perhaps lasted for hundreds of years blocking out all sunlight. For example, St. Helen erupted in 1980, and the dust traveled around the world. It took several months for the dust to settle in the St. Helen's area, and for the sky to clear. However, the eruption of St. Helen's is minute compared to the bombarding of earth by meteorites.
When the skies finally cleared, and the sun was visible, the climate of the earth changed. The Northern Hemisphere was no longer a tropical zone, but had four seasons, spring, summer, fall and winter. The Southern Hemisphere stayed tropical and consisted of humid jungles or arid desserts.
Today, scientists are warning of global warming, the consequences of man- made pollution. The poles are melting and icebergs are breaking apart. The polar bear is drowning in the seas and is now in danger of becoming extinct. Earth has gotten warmer.
One question to consider is this warming natural and are we returning to the climate that we once had during the dinosaur era. Has all the debris and dust finally cleared from the atmosphere, giving earth more sunlight, and creating a soon to be tropical environment.
Are the scientist correct on the global warming theory? Have we practically destroyed our planet by our greed of wanting better and more? Has our usage of chemicals poisoned the earth, and changing the climates world-wide? If the scientist are right, can we correct our mistakes, and are we willing to sacrifice for a cleaner better environment, or are we going the way of the dinosuars?

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