(CNN) -- A new startup called Tap has a bold ambition: convince people to stop buying plastic bottles of water. Tap launched an app Tuesday that displays nearby clean drinking water locations, from ...

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The epiphany moment for Samuel Ian Rosen came when he found himself at an airport shelling out $5 for a bottle of Evian water. “Nobody up till now has built a Google Map for (drinking) water,” Rosen, ...