dr. shini somara. went inside a tornado. >> i got in the vortek, to experience force 3 winds. and trust me, to people that force of nature on my skin, it was just unreal. let's take a look. >> thank you very much. >> oh my goodness! coming down right now, major tornado. >> coming down another tornado. >> a deadly tornado rushes towards the u.s. community of oklahoma city. a two mile wide wind tunnel ripped through the capitol on monday. >> oh my god! >> that was the tragedy in the ground but new innovations are developed in the lab to protect against future disasters. >> we create tornado like vortexes. mimicking tornado wind speeds. >> i'm at the national wind institute at texas tech university where they can actually recreate tornadoes. harold janes professor of mechanical engineering designed and built the tornado simulator called vortek. >> in a controlled situation, to understand what happens to structures. >> tornado winds are rated on an ef scale which is an indicator of the severity of the storm

dr. shini somara and marita davidson.ou went through a bit of a swim. >> i got to are swim with researchers from cal state shark lab, measuring all sorts of environmental conditions. let's take a look at it. this is catalina island. 27 miles off the coast of los angeles. a place known for its beauty both above and below the ocean that surrounds it. most of the fish that call these waters home go relatively unnoticed. but one species is impossible to miss. them. if you were from cal state's shark lab, it's not a bad place to set up shop. >> this is going to change how we study sharks in the ocean. >> chris lowe, getting to know him and his work is getting your feet wet. obviously, here a day at the office requires a different attire. and it also provides a different view of the world. it takes only a few moments underwater to understand chris lowe's passion for the ocean. and for the sharks he studies. >> what is it about sharks that interests you from a scientific perspective? >> they're a canary in a coal mine for the oc

. >> dr shini somara is a mechanical engineer. kyle hill is an engineer. and i, phil torres, am an ento meteorologist. tonight - los angeles builds for the future, but discovers a secret deep under a subway line. >> i was the first person to ever see that. >> reporter: ever see what? >> a rare fossil. otherwise it's impossible to see. >> that's our team, now, let's do some science. [ ♪ music ] >>> hello, welcome to "techknow". i'm phil torres. joining me today is kyle hill, dr shini somara, and dr crystal dilworth. we have great stuff coming up. we'll start with you crystal dilworth - you have a new look at cancer. >> all of us know one person affected by cancer. i had a chance to go into the operating room and look at a new technique allowing surgeons to actually see cancer. let's take a look. >> reporter: during the gulf war soldiers used night vision goggles that allowed them to see in complete darkness. now, at barnes jewish hospital at washington university school of medicine, besides a mask, surgical scrubs and gloves, this doctor will wear the same

i'm phil torres, joined by cara santa maria, marita davison, and dr shini somara. shini has been taking us on a journey through greenland. we have seen the flights and the science. what was it like to be there with the scientists? >> well, i got to experience that first hand. we were staying in the statement location as where the n.a.s.a. crew live. it was pretty amazing, to say the last. really cold. let's take a look. >>> i came to greenland to join n.a.s.a.'s operation icebridge. their goal is to collect the critical data on how polar ice sheets are changing. here the an arctic they days are long at this time of year. you have to stay up until nearly midnight to catch the famous northern lights. to the n.a.s.a. scientists home kiss. >> just taken off my boots. they are so heavy, it's a relief to take them off. i'm keeping them outside my room, because it's a custom. i noticed that my room used to be a storage room, so welcome to my humble dwelling. i told you it was basis. these are flip flops, essential when you share a bathroom with men and women. this is a se

dr. shini somara shini somara is a mechanical engineer. as scientists test new building tines can they survive the most powerful twisters on the planets? kosta grammatis, feeding a hungry planet. he's touring the farm going inside one of america's busiest airports. and i'm phil torres, i'm an entomologist. i study spiders in the rain forest of peru. that's our program, let's do some science. ♪ ♪ are hey guys welcome to "techknow". i'm phil torres and here with kosta and shini. here in the u.s. when you think about tornado alley, you think of oklahoma. you recently went there. >> very high frequency of tornadoes, 50 on average. we went to moore, oklahoma, it was devastated by tornadoes on may 20th. we went to university technologists, let's take a look. >> west side of burton we have a major tornado coming down. >> may 20th, 2013, one of the worst tornadoes on record is captured on a time lapse video that went viral. >> people in west moore must be underground for this tornado. we have large large chunks of debris. >> the entire nation watc

dr. shini somara shini somara is a mechanical engineer. as scientists test new building tines can they survive the most powerful twisters on the planets? kosta gr

dr. shini somara, life and death in the or, one woman in desperate need of a transplant.the donor lung arrive

. >> dr shini somara is a mechanical engineer. kyle hill is an engineer. and i, p

dr shini somara is a mechanical engineer.ght "techknow" on the road in greenland. >> we are on our way to the air base. i'm nervous. >> we are on board for n.a.s.a.'s operation icebridge - flying over some of the largest ice sheets on the planet. >> i managed to get into the cockpit, which, for a mechanical engineer, is a dream come true. >> of the the view is amazing,

dr. shini somara, life and death in the or, one woman in desperate need of a transplant.ill the donor lung arrive

dr shini somara is a mechanical engineer.ght "techknow" on the road in greenland. >> we are on our way to the air base. i'm nervous. >> we are on board for n.a.s.a.'s operation icebridge - flying over some of the largest

dr shini somara is a mechanical engineer. tonight "techknow" on the road in greenland. >> we are on our way to the air base. i'm nervous. >> we are on board for

dr. shini somara shini somara is a mechanical engineer. as scientists test new building tines can they survive the most powerful twisters on the planets?