shini somara and marita davidson. u 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 oce

marita davidson is a biologist specializing inning innings innd evolution. kosta grammatis is an engineer who designed a buy ontic eye. >>> i'm phil torres, i'm an entomologist. today, technology performance miracles. the suit that's helping paralyzed people walk again. that's our team, now let's do some science. ♪ >> hi guys, welcome to techknow. i'm phil torres and i'm here with kosta and marita. now, scientists are detecting millions of earthquakes around the world. what technology do you study to help mitigate them? >> here is san francisco's bay bridge. they absorb the areas of the earthquake while leaving the rest of the infrastructure intact. really, really cool. let's check it out. rising from the san francisco bay is the newest architectural jewel of northern california. the new bay bridge, which connects san francisco and oakland, is now open for business. and what a sight it is to see! roughly 280,000 vehicles travel the east and westbound lanes each day. it's now the widest bridge in direction. this is six years worth of round the clock time laps

marita davidson is a biologist specializing inning innings innd evolution.kosta grammatis is an engineer who designed a buy ontic eye. >>> i'm phil torres, i'm an entomologist. to

marita davidson is a biologist specializing in ecologist and evolution. tonight, swimming with sharks

marita davidson, shows us why the tower of the san francisco bridge may be the safest place to ride out a major quake. and i'm phil torres. i'm an entomologist. that's our team. now let's do some science. ♪ ♪ ♪ ♪ ♪ >> welcome to "techknow." i'm phil torres and this week i'm here with kyle, rachelle and marita. kyle you went to harvard university to look at one of america's most deadly diseases. tell me about it. >> i went to harvard and spoke with researchers that found a molecular needle in a haystack. let's take a look. the human heart is a miraculous fist size feat of engineering. beating more than 2.5 billion times in a lifetime. pumping five quarts of blood in a minute or about 2.5 million galoshes a day. the equivalent of filling up your suv whom time 100 times a day. unfortunately, the heart isn't a machine that's built to last. [ flat line ] >> when you get these heart failure episodes what is it like? what does it feel like? >> it feels like you can't breathe and it feels like you're going to pass out. >> dr. richard lee is antoinette owens heart failure. treating her for diast

marita davidson is a biologist specializing inning innings innd evolution.sta grammatis is an engineer