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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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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.
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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.