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By piece over the last 16 years. and you can thank whats called the canada arm 2 for that. it built the iss while in orbit and grabs incoming spacecraft docking them to the station. there are no do-overs in space, meaning the canada arm 2 cant miss. so its robotics are some of the most precise and accurate technologies you can find. that same technology used on the space station was applied to a surgical robot here on earth, a robot that wants to remove the word "inoperable" from our vocabulary....

Night otherwise. at the robots workstation dr. sutherland removes the aneurysm from lees brain. >> believe it or not, its over. >> reporter: when the aerospace engineers first built canada arm 2 for the space station, they never dreamed it would help people rebuild their lives. those unintended benefits continue to extend to our daily lives here on earth. >> just break off a piece. >> reporter: including what you eat, and how you exercise. >> we use all the different surfaces of the space statio...

Nearly 400 kilometers above the earths surface, the international space station continues its orbit, where it has been every day for the last 16 years. a six-person crew lives onboard. their official titles are astronaut or cosmonaut, but their day job is really scientist. at its core, the iss is a science laboratory. there are experiments that help us understand earth and space, of course, but also the human body and medicine. >> there are parts of the vibration isolation stabilization system, ...

In 1998, the station began an on orbit assembly, meaning it was built in space and was only recently completed. since the first crew arrived in november of 2000, more than 200 astronauts from 15 different countries have visited the station. >> when people say this still, you know, is it worth the cost -- >> all the technologies that weve pushed that then turn around and become amazing new things back here on earth because were trying to work in an environment where our engineering assumptions ar...

I just need to be clipped into these pedals. theres just something about space that brings out the kid in all of us. the curiosity, the possibility, the unknown. but its what were learning in space that might be the most exciting of all. as space technology overlaps with life here on earth and life on earth extends to space, theres no doubt that the iss is helping us explore new ways to improve our health and better our lives. exciting new breakthroughs, only outer space can provide. for "vital ...

Imagine a science laboratory that teaches us more than weve ever known about disease, muscle and bone health and eyesight. a lab with the unique environment that affects the human body in ways weve never seen before. in fact theres no place like it in the entire world. thats because this lab doesnt exist on earth. this is "vital signs." im dr. sanjay gupta. the lab were talking about is the international space station. when we say this is a mobile lab, we really mean it. the iss is orbiting arou...

Get personalized inside. youve got some real nice fans blowing on you at nice so you dont suffocate. >> can i step in here? >> yes. dont tell anyone. ill try it out. it could be pretty relaxing. do you strap in then? >> basically you have a sleeping bag thats velcroed to the wall. you also have a head strap because having your head float when your body is strapped in is very creepy to a lot of people so they like having their head strapped down to the pillow. the pillow is real thin. and thats y...

Benefitting us back here on earth. >> that effect of floating around causes changes in the body that look a lot like all the bad things that happen as you get older. your bones start breaking down, your muscles start breaking down, your heart shrinks, fluids shift around in your body. >> thats fascinating. it sounds like what youre saying is this environment kind of accelerates aging for a period of time. it can be reversed when you get back down toe earth, but the ida that you can accelerate ag...