Billy Joel canceled all concerts after doctors found cerebrospinal fluid buildup in his brain. Here's what that means.

Tech Insider : Business
Billy Joel performing on stage
Billy Joel canceled his tour after being diagnosed with normal pressure hydrocephalus.

Ethan Miller/Getty Images

Biden's doctor says 8 White House visits by Parkinson's expert were for routine military staff neurology clinics

Tech Insider : Politics
Joe Biden.
President Joe Biden.

AP Photo/Susan Walsh

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