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Baby teeth hold clues to the harms of toxic metals for infants — and older kids
By analyzing layers in these teeth, scientists have pinpointed a critical window when baby brains are most vulnerable to toxic metals — and linked that to behavior problems later in life.
First seen · 1:00 PM UTCApril 29, 2026
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Golden Week
Japan's cluster of four national holidays in a single week. The country collectively migrates to hometowns, train stations are packed, and work email goes silent.
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Shōwa Day
Shōwa Day is observed in Japan (昭和の日). Recognized nationally.
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International Dance Day
UNESCO celebration marking the birthday of Jean-Georges Noverre, the father of modern ballet. From kathak to K-pop, the human need to move to music is universal.
+2Also on this date in history
All →2015
A baseball game between the Baltimore Orioles and the Chicago White Sox sets the all-time low attendance mark for Major League Baseball. Zero fans were in attendance for the game, as the stadium was officially closed to the public due to the 2015 Baltimore protests.
Sport2013
A powerful explosion occurs in an office building in Prague, believed to have been caused by natural gas, and injures 43 people.
Milestone2013
National Airlines Flight 102, a Boeing 747-400 freighter aircraft, crashes during takeoff from Bagram Airfield in Parwan Province, Afghanistan, killing all seven people on board.
Milestone