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And i assume that means it's much better. it makes it so much easier than having to read through the ingredients labels and the nutritional information. that's great. >> reporter: they're called nuval scores. a for-profit business. yale university researchers and other top experts developed a secret math formula that gives points for good nutrients, like protein and calcium, and takes points away, for bad ones like transfat and cholesterol. >> what nuval has intended to do, is empower people. knowledge is power. now, you know. some people will certainly use that to trade up to better nutrition...

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You're -- a customer of yours at a store. >> reporter: sleeman has worked at american for 24 years. his dad did too. he's seen the proposal that eliminates 8,800 ground workers and mechanics and wonders what the airline is thinking. the transport workers union says it gave back more than 30% of salary and benefits in 2003 to keep american flying. union members hope the loyalty would be repaid this time around, but it wasn't. flight attendants called their 2,300 layoffs betrayal. >> i can only tell them the cuts they're talking about are in relation to this term sheet and this is not a term she...