Two-thirds of the world's population faces an extreme water shortage at least one month a year. Many of these places are dry, arid deserts with no reliable source of fresh water — other than fog, that is. But fog capture isn't as easy as you might think, at least for us humans. The Namib Desert beetle, on the other hand, has practically perfected the art. Here's how scientists are creating technology based on the beetle's exoskeleton that could help end water scarcity.