A smart thermos promises to keep track of what you drink

What if it turned out that you were drinking a Big Mac every day? Ok, not like a gross hamburger-shake, but the nutritional equivalent of one. 

It’s actually not that hard: if you have a latte in the morning, a Coke in the afternoon, and a single beer at dinner, you probably don’t think you’ve gone too crazy. But, those drinks together have more calories than McDonald’s iconic double burger — and many of us could be easily imbibing that every day.