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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.
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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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