so if we open it up, we can reach inside and pull up. >> reporter: there's the vaccines. >> vaccines. >> reporter: and it is very cold. >> it's cold. oh, for sure, it's cold. >> reporter: and you could use this all over africa, all over south asia, parts of latin america, anywhere where you have large rural populations that don't have access to really good power supplies. >> that's right. the world has tons of people that work and live in an area that has either no power or very flaky power. and with flaky power if the, you know, generator goes out, if the power lines go down, the vaccine goes bad. and it's not just that you lose the vaccine, which is very expensive. but in fact, you kill kids. even in this country. when human organs are moved around, enormously valuable, a kidney or a heart, you have to keep it cold.