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The ivory-billed woodpecker was (or is) the largest woodpecker in North America. Most people believe it is extinctbut at least one sighting was reported by ornithologists in 2006.
Vaccines prevent between 2.5 and 4 million deaths every year.
The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.
Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.
Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.
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