The move to add potential penalties to the OEMs came after the race manipulation of both Chevy and Toyota drivers in the Xfinity 500 at Martinsville Speedway last year. NASCAR officials spent over 30 ...
NPR's Ailsa Chang talks with Emily Kwong and Regina Barber of Short Wave about the fluid dynamics of crowds, an early fossil of a modern bird and new data on how people's moods change through the day.