In the new Pixar film Up, a crotchety old man named Carl ties thousands of balloons to his house and proceeds on an awesome flying adventure to South America. This left several Explainer readers ...

We’re talking about the house from Up, lifted into the air by thousands of balloons, setting Carl and Russell off on their adventure. Of course, we know that such a thing is impossible.

The conceit of the new Disney/Pixar cartoon epic, Up, is that an old guy's house gets attached to a bunch of helium balloons which lift it up out of the city and on a wonderful adventure.