. >> the rates are tripling for children 6 through 11, qua drupeling for children 11 to 19. it is very, very serious. >> little or no impact on obesity. >> reporter: the meas would impose the tax of 1 kent per teaspo teas > called the knee defender and a lot of people are searching for it on the internet right now. we talked to the inventor of the gadget, a gadget that sparked a fight in mid air. >> reporter: a new way to check your snail mail before it arrives at your door. i'm erika gonzalez. i will show you the new service you co >>> we have yet another reason to be unhappy on an airplane. it has sparked a fight on board a flight recently. >> it sure has. it shows how far some will go for a little bit of extra leg room. the united flight was in route from newark new jersey whenhe fight forced pilots to land when a man used a gadgetnown as knee defender. a flight attendant asked him to remove the device and he refused. that is when the woman stood up and threw a cup of water on him. both were sitting in economy plus section. neither facing charges tonight but the faa could