i'm phil torres, joined by shini somara, marita davison, and cara santa maria.e are in for a treat. shini - you just got back from on amazing journey to one of the most spectacular places in the world. please tell us about it. >> well, it was an absolute dream come true mission that i was on. i went to greenland and i was mapping glaziers with n.a.s.a. on a peace-free aircraft. the views were stunning. let's take a look. i travelled half a world away to get to a case some call the canary in the coal mine when it comes to climate change. greenland. i was here to observe an n.a.s.a. mission called operation icebridge. since 2009 n.a.s.a. has been flying airborne missions out of kangaloosa, a former u.s. airbase. the goal is to measure changes to the arctic sea ice and the ice sheet over greenland. we are just on our way to the air base and i am feeling kind of a bit nervous. i'm not the most relaxed of flyers. so let's see what happens. >> it was 6am, and about 10 degrees farenheit. >> so it's usually about a quarter of a mile walk to the plain. whatever condition

. >>> hey, guys, welcome to "techknow", i'm phil torres, joined by marita davison, and kosta grammatis. marita, you met a man who spent years as a crime scene investigators for human victims. now he and his lad is taking on the fourth largest industry in the world, it's a tragic. >> yes, we think of forensics dealing with human victims, we don't think of it as a bird. it's a wildlife services add, taking on the illegal trade in endangered species problem. >> some lines are extinct. how big is the industry. >> in terms of economic value, a $19 billion industry. techknow had an inside look at the c.s.i. forensic lab. >> reporter: the world's animal kingdom is under siege. since 1970 animal populations declined on average by half, according to estimates by the world wildlife fund. a big driver is wildlife trafficking. illegal trade in wildlife is a big global business, worth at least $19 billion a year. that makes it the fourth largest criminal industry in the world. right behind drugs, counterfeiting and human trafficking. it's been connected to organised qaeda. >> the rhinoceros, one of

crystal dilworth and marita davison. fraking.s don -- fracking.doesn't come without controversy, potentially doesn't come without cost. >> yes, fracking is hugely controversial. humannics. >> s that range the gamut from environmental to health. and texas has been kind of at the center point of a lot of this issue. whether they're economic, environmental, political, texas is in the mix. >> when we think of texas we think big oil, not earthquakes like we're thinking of california. but they're experiencing seismic activity. >> so we got to see how one small town in texas is dealing with this big national issue. let's check it out. >> we were sitting in the living room one night watching tv and there was a tremendous explosion, it sounded like, and then the whole house shook. >> and the next day there was another one and then just kept coming. and that's whenever we realized we definitely have a problem. we should not be having earthquakes in texas. country. this is reno, texas. population 3200 and just 13 square miles long. if anypl

i'm with costa and marita davison. instead of science, let's talk football. now, i'm a broncos fan.n i saw what the 49ers did with their new stadium, i'll feel bad every time the broncos beat the niners. >> if their game is half as good trouble. >> when you think n.f.l., small does not come to mind. it's full of big excitement and business. don't think of it in terms of being a big player. the stadium may be poised to change that. i got to check out environmental advances. >> reporter: it's game day at levi stadium, home of the san francisco 49ers, at first glance the scene in the parking lot it classical football - tailgating team revalry. san francisco football is changing the playbook. >> we pushed architects and engineers to think about everything that could be green. >> reporter: in trying to win the green game. this is the n.f.l.'s new arena, and the team behind says it has series green credentials. >> it's a good snapshot of the full court. >> reporter: there's 189 solar panels producing enough energy offset by the 2,700 tv and other power guzzlers during the home game. there

marita davison is a biologist specializing in evolution.ht, fracking. >> i looked out my front door