I always preach about the importance of wearing a bike helmet to avoid head injury, and here is yet another example out of the UK.  Helmets work, and on young kids they are especially important since kids are more likely to wreck their bike than an older, more skilled rider.  Make it a rule in your house if you have young children.  No helmet, no riding.  Period.  For the entire article, follow this link:   http://www.dudleynews.co.uk/news/4458265.Cycle_helmet_prevents_serious_injuries/