you start off with cultures. then you feed it elements of the air, and it grows and grows and grows, just like that yogurt culture. you dry that, and you get to a protein-rich flour. reporter: and that can be processed to mimic chicken, seafood, and beef. we can grow enough material to make a steak in a matter of hours. reporter: the concept for air protein came from nasa in the 60s, as a way to recycle the co2 astronauts exhale and turn it into food. dyson developed the technology ht clate change. findust today produces more than greenhouse gasses than the entire transportation sector. what s going to happen when we have ten billion people? bon appetit. really good. reporter: for now, we ll have to take dyson s word for it. she says only a small circle of people, including investors, have tried it. when are we going to get to the point where outsiders like me can try it? very soon. not yet, but very soon. reporter: so, air chicken is still in the beginning phase o