Tornadoes are vertical funnels of rapidly spinning air. Their winds may top 250 miles an hour and can clear a pathway a mile wide and 50 miles long. Twisters are born in thunderstorms and are often ...
A wide pulse pressure is when the top and bottom blood pressure numbers are more than 100 mm Hg apart. Older adults and athletes may have wide pulse pressure, but for non-athletes, it can mean a ...
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