what is the problem with polysterene. with polysterene. >> there's packaging, building >> there's packaging, building constructive, constructive, tenses of millions tenses of millions of of dollars worth used. dollars worth used. they are not compatible with the they are not compatible with the earth's atmosphere. earth's atmosphere. >> we have all seen this. >> we have all seen this. every big product is packaged in every big product is packaged in this material. this material. these are made from these are made from unsustainable unsustainable petrochemicals and petrochemicals and can take up to a hundred years - can take up to a hundred years - maybe more - to biodegrade and maybe more - to biodegrade and leave the other. leave the other. we use agricultural waste, like we use agricultural waste, like corn husks as a resin. corn husks as a resin. we combine them, we grow it in a we combine them, we grow it in a mould to make a shape from mould to make a shape from everything from packaging. everything from packaging. >

she was packaging that can one day replace polysterene. rachelle oldmixon specialises in behaviours. i'm phil torres, i study insects in peru. that's our team. let's do some science. ♪ music ] >> hi, guy, welcome back to "techknow." i'm phil torres, with rochelle, kyle and lindsay. kyle, the nfl paid over three-quarters of a million to settle a lawsuit. what was it about. >> there's a focus on the concussion problem. the nfl has thousands of place, and millions of players in youth and challenge football. i went to virginia tech to look at technology to test helmets and track hits on college and youth players. let's take a look. . >>> homecoming in the heartland. this is cornhusker county. nebraska university, the epicentre of college football. >> first big win. >> along with the tradition of football - come the hits. cheer cheer >> big hits like this one in front of our cameras. no one knows how hard the hits can be better than blake lawrence. former lion backer for nebraska korn huhs kerrs. >> if -- korn huhs kerrs. if you had to bang you