In an analysis of data from nearly 700 children, Younan and her team found that kids in Los Angeles who were exposed to more air pollution over the course of adolescence were more likely to engage in delinquent behavior.

Read the article for details, but it seems pretty thorough.

Younan specifically looked at the pollution from particulate matter 2.5, tiny particles that are 30 times smaller than a human hair. “It’s not smog that people can see,” she says. “But if they can’t see it, it’s bad.” This type of pollution primarily comes from cars and traffic, Younan says.

Maybe Those NFL Players Should Just Toughen Up

American football is ridiculous. Especially for kids.

Former National Football League players who began to play tackle football before the age of 12 appeared to have an increased risk of later-life brain trauma, according to a study recently published online in the Journal of Neurotrauma.

Willingly taking repeated blows to the head, even in helmets, is foolish. No one else in the world plays a sport like this, and for good reason.

“If you had an 8-year-old kid now, would you tell him you wanted him to play football?” Ditka says on the latest episode of HBO’s Real Sports. “I wouldn’t. And my whole life was football.”

Football is too rough for Mike Ditka.