"The Post of Finland commissioned Berry Creative to use an innovative way to concretize the consequences of climate change on stamps. By warming up the heat reactive ink in the stamps, individuals can see with their own eyes the consequences of climate change to Finland: There will be no more white winters, people living in the severe heat areas are forced to leave their homes and relocate, and many endemic species will become extinct.
Take a stamp, heat the black area by rubbing with your finger and you will see the future if we don’t act fast to fight climate change. Unlike the effect in the stamp, climate change in not reversible."