Are the balloons released before the Indy 500 really safe? We tested them. - World Best News

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Saturday, May 25, 2019

Are the balloons released before the Indy 500 really safe? We tested them.


The IndyStar conducted a citizen science experiment to determine how fast Indy 500 balloons used on race day would biodegrade, if at all.

     
 
 

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