gallons

Water is absolutely critical for survival. So today’s No. 1 question addresses how to procure clean, clear, drinkable water from any source — even a dirty toilet. Don’t believe me? Well, I’ve got video proof of the gadget that makes it possible.

This week’s mailbag covers an emergency water source in your backyard, how to win at poker and what to do in the event of a nuclear attack. Let’s get started.