Climate change becoming harder to ignore

If you liked that cool World Wildlife Fund paper towel dispenser, you’ll love these three new ambient-advertising pieces for the Natural Resources Defense Council, featured on Ads of the World. Sure, each one uses a gimmick—color-changing coffee cups, a world map on a water cooler, and a bus hut sign that collects rainwater. But even though these tricks have likely been tried before, you have to give credit to Miami Ad School in Brazil for some clever and consistent work.

—Posted by David Griner