. >> brian watkins is the executive director of the california republican party and he has adhd. when he heard about endeavor, he decided to give it a try. >> it is not fun but it is like fun, going to the gym. you know you need to take care of yourself. >> it is a big goal for us, to get people to think about this as a treatment that is delivered through a game. >> there are now two versions, a prescription version for kids and an over-the-counter version for adults. >>> now to project earth. it turns out an waster can do so much more than just turn a grain of sand into a pearl. experts say one tiny shellfish may play a big role in curbing the impacts of climate change. we took a closer look at the olympian quest to keep them thriving. >> reporter: at this oyster depot in san francisco, the line forms early. if you are lucky to get a seat, you are in for a treat. >> we just had the olympia oysters, which were phenomenal. >> reporter: the olympia waster, small as a silver dollar but big in flavor. they are the only oyster native to the west coast. >> i grew up eating this oyster