. >> desperate to save his life-long family business he started working with tessa hill and a team of researchers from bay. >> the ocean is a tremendous sponge for carbon dioxide. about 30% of what we put into the atmosphere just gets soaked right into the ocean. >> and that carbon dioxide that enters the ocean from our human activities changes the chemistry of the sea water. >> that's what we call ocean acidification. >> it's soluble in sea water as it moves from the air to the ocean, it binds with water molecules forming what's called carbonic acid. this is changing the very ocean. >> how is it particularly affecting the oysters? >> anything with a shell, an oyster, a muscle, all of those things use compliments of sea water to build their shell and those building blocks are calcium and carbonate. the more acidic the ocean is, the less material there is in that sea water for those animals shells. >> amazingly, it can take up to three years for an oyster to use calcium carbonate to grow large enough for market size. >> these are smalls. grill. >> the problem poses a serious threat for

check out tessa. that's skill. left hand, right hand. >> that's our report. we're out of time. night. see you at 11:00. [♪] [phone rings] agnes, cancel my appointments. what appointments? wishful thinking. it's called, "alternative energy:

salad dressing conned meant called tessa may's all natural.ss. >> it is huge. if you go to whole foods, i think it's the biggest selling salad dressing there brand new company and a massive success. gentlemen, congratulations. i'm going to get you confused in order. greg, brian, and matt. >> exactly. >> oldest, middle, youngest. >> i met these guys on the train coming to new york. i hadn't heard of the value salad dressing because i don't eat vegetables. i texted all the women in the family and they were blown away. it was like meeting rock stars. >> it was like meeting rock stars. >> just like that. before we start, this your story is pretty amazing. a lot of people have a recipe at home and think i could bottle this it's so good. how do we ever do that? you didn't have a bunch of money backing this up. you made this happen all on your own. how did you do it? >> we came home from work one day and a neighbor stole a dressing from my house. and i called a bunch of my buddies and one of them told me took it i thought to myself if a man is going