i'm phil torres and i'm here with dr. shini somara and marita davidson. marita, you 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

joining us today are dr. shini somara and marita davidson. guys when i'm in the field doing my research, one of my big issues i'm working on is how to conserve our wildlife. i got to go down to the san diego zoo. sme they are prerving dozens of -- they are preserving dozens of different species. this zoo is frozen! so let's take a look. at the famous san diego zoo safari park, lies a zoo within a zoo, replaced by liquid nitrogen and cell cultures. this is san diego's frozen zoo. that's right, zoo. not the one you grew up visiting but one in which there are living cells from over a thousand expertise, preserved species , preserved and frozen, all to help protect future generations of animals currently facing extinction. what was the genesis for creating the frozen zoo? >> the possibility to save sells -- cells allowed us to undertake, each cell of an individual is capable of producing the entire individual. >> take me through the process of freezing cells. >> we get a biopsy, a small slice of that fest >> we can take those cells and treat them

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 technology for her next surgery. this is a 72-year-old woman who noticed a lump, had a biopsy by needle core that showed a breast cancer. i thought she was a great candidate for lumpectomy, which she was up for. and we'll do a biopsy to see if there has been a spread to her lymph nodes. >> reporter: before the surgery this patient was injected with a green icg eye - invisible to the naked eye, it binds to the proteins in the cancer cells. >> i

dr shini somara is a mechanical engineer. onight "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, but something a wrong. >> this gigantic, ancient ice sheet is melting. >> we explore what is happening in greenland and how soon it will effect us. >> marita davison socializes in evolution, cara santa maria is a scientist journalist and educato in microbiology, and i'm phil torres, i'm an ento meteorologists. that's the team, let's -- entomologist. that's the team - now let's do some science. 7 music ♪ ] >>> hey, whim to "techknow." i'm phil torres, joined by shini somara, marita davison, and cara santa maria. we 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

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

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 is a mechanical engineer. kyle hill is an engineer. and i, p

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

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

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