The helmet fear-mongers go full-retard:
For the past decade, we’ve drilled into children that when they ride a bike, they need to wear a helmet. Now scientists say it may be too late: Tricycle riders should be wearing them, too.
Using data collected from 100 emergency rooms for the National Electronic Injury Surveillance System, researchers found that boys are more likely than girls to turn up in the emergency room. Two-year-olds seem to have the most accidents, although there were tricycle injuries for children up to age 7. The most common broken bone was the elbow and the most common injury overall was a cut to the face.
In addition to helmets, the authors suggest kids wear elbow pads, and that parents supervise their children while they ride.
Even better, just make them wear bubble-wrap.