climate change stamps

 

This is so cool--just as good as the solar eclipse stamps a few years ago! 

The Finnish Post Office tapped design firm Berry Creative to create this series of heat-reactive postage stamps that reveal messages about the effects of climate change when you activate them with heat (like a finger pressing on them). Each stamp tells a little two-act story about a different aspect of climate change: global temperature increase, climate refugees migrating, and endangered wildlife. 

via {kottke}