In London, the "seriously water stressed" UK capital confronts summer water shortages with a creative — and very British — solution: A new bio-diesel desalination plant that will run partly on used vegetable oil from fish-and-chip shops.
Also in London, the newly erected Speedo Swimsuit Pavilion is made from obsolete swim suits. True story.
Upgrade the grid: The US electricity grid, still reliant on 1960s tech, wastes power and discourages the use of renewable energy sources.
Endangered animals as graffiti walls: WWF campaign asks, "What will it take before we respect the planet?"
Photo: Michael Koehler