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 on the front lines of a devastating wildfire. and crystal dilworth is a molecular neuroscientist, how police work could stop crime before it happens. lindsay moran, shows us how mushrooms may replace polystyrene packaging. i'm phil torres, that's our team of scientists, now let's do some science. ♪ ♪ >> it has been another fantastic week of science on the road. we've got crystal, lindsay and marita here. marita, you were basically a very high tech firefighter for a week. tell me about this. >> i was on a story to tell us how we fight the rim fire in yosemite. here it is. this is a very unusual piece of technology. it almost looks like an alien insect. they've got it in a hangar and they're going to fly it up to yosemite and going to be eyes in the sky to generate action from the ground. let's check it out. the size and scope of the wildfire burning in yosemite national park is astounding. larger than the city of chicago at a cost of more than $100 million. the fire that is destroying hundreds of square miles of sensitive ecosyste

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

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. wittÑ well battery pack and then there's that whole walking thing. >> it takes over the function of the muscles in your legs. it can do that either completely, for a person who's completely paralyzed, or partially for someone who is rethroarng walk, like someone who -- credit relearning to walk, like someone who has just had a stroke. >> i put the device in walk-mode and take the first right step and as i move my body the exo will move with me. if i don't move to the any next position the exo stops. >> test pilots like amanda boxtel and jason geezer, how have they helped you advance this technology. >> they have helped tremendously. everything is unpredictable once you introduce a human into the situation. 38 ph.d.es had a different idea how to control something. without people like amanda and jason we would be at a standstill because we couldn't test anything. >> the robot still has