The orange folder promises a relationship with one child. Behind it sits a 55-country machine for water, health, education, livelihoods and emergency relief - built to make itself unnecessary, and forced to explain why personal giving works best when the money is pooled.
Reverse-osmosis plants spend their lives fighting what sticks to a membrane. This 13-person Washington manufacturer wants to make the filter defend itself - without making operators rebuild the plant around it.
AirDoctor and AquaTru turned invisible anxieties - what's in your air, what's in your tap - into a nine-figure consumer business. Here's how a direct-response veteran built it.