Two workers in Bellavista, Peru, perched 18 feet (5.5 meters) high to sew nets onto a fog-collecting apparatus in October 2007.

Conservationists Kai Tiedemann and Anne Lummerich designed this fog catcher--nicknamed "Eiffel" for its metal frame--to collect up to 660 gallons (2,500 liters) of water a day in the foggy winter months from June to November.

When the fog-water starts flowing, "it's amazing," Lummerich said. "It's like opening a tap."