. ♪ ♪ >> hi, i am lisa flesher and you are in the stream chances you know someone who has bad or kneegery, but there is growing evidence that these and other brothers may be used too off and could be detrimental to your health. a game changing way to detect cadgessers early. he is doing it with a smart phone, a 3 d printer and in less than an hour. and later. gnarly half the world's languages will be extinct by the end of the century, the video game project that's got just out to save language, but bring it back into daily conversation. digital producer and co-host is here, he is bringing in all of your feedback, raj, you look at these otherused procedures and it is hard to not know someone that has had one of these. >> behind the stats there are human beings stories narrative, family and friends, and speaking about our community, we have a ton of stories about this on facebook. here is margaret, she writes i had degenerative district of columbia disease for years. i had a surgeon promise relief, but i came out of surgery unable to use my right leg. once you are in the it you can see