by Zack Beauchamp
As the final movie premiers in London, William Weir writes about the importance of the series for science:
That last study found that children's emergency department visits decreased significantly when new Harry Potter books went on sale. Conversely, a 2003 study in the New England Journal of Medicine found that the lengthy books actually caused an ailment dubbed "Hogwarts headache" among young readers who spent too much time reading them. A few research topics are grounded entirely within J.K. Rowling's fictional world.