The kids lose water. We find out why water is the key to survival.

They make it back with the solar panel but now they have a new problem - there's no more water. The kids have to figure out how to stay hydrated but they will also have a big decision to make. In this episode we'll look at where our water comes from and how important it is to our survival. Also, we've got some killer tips on where to find water without sipping from the toilet, how to stay safe when drinking poopy water, and whether you should drink your own urine.