Green Thing encourages people to walk more, cut back on meat, buy less, turn down the thermostat, waste and fly less, and unplug vampire electronics. So every day until Earth Hour on March 23, the London-based nonprofit is publishing a poster to promote those green habits.

And some big designer names contributed to the project, including Google Creative Director Tom Uglow and London 2012 Olympics logo designer Patrick Cox. Green Thing knows “that a dig, joke, or nudge is way more effective than another weeping seal cub,” Cox said in a press release for the project. Follow the project on Green Thing.

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