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This is what protective head gear looked like in the old days. here's what it looks like now. the changes are obvious, you've got a lot of padding inside, a much tougher shell as well. some, in fact, have these sensors that are built inside to measure impact. if someone takes a hit on the football field, some of these helmets transmit a signal wirelessly to the sideline that gives you information like this, tells you the severity of the blow, the impact of the blow, such important information. but some people say these helmets really aren't the answer. in fact, we heard from a lot of people th...

Concussions don't just happen in football. they can happen in so many ways. tell us who is at risk? >> anyone who plays in contact sports or collision sports like soccer where head impact can happen to another player, a goalpost or ground. it's a problem. it's a problem in our military veterans who have served. we have learned more about concussion than ever before in the last few years, and we're going to continue to learn. >> i want to show our viewers. this is one of the helmets that we got from georgia tech. you can see the padding inside, about an inch or so thick. there's foam. you've go...

Latest updates on this topic from reliable sources.

Latest updates on this topic from reliable sources.