This year marks the 75th anniversary of the Doomsday Clock.

The Doomsday Clock is a metaphor for how dangerous this moment in human history is — and the urgent need to get involved. We want to hear about the actions that inspire you and how we can work together to save the world.

Since 1947, the Clock has been a symbol for how close humanity is to destroying itself with nuclear weapons, climate change, and disruptive technologies.

Our belief is that because humans created these problems, we have the obligation and opportunity to fix them. So, in the 75th year of the Doomsday Clock, we’re asking people to share their ideas about what can be done to turn back the Clock.

Challenge submissions can share:

• Positive actions that inspire you
• People or groups who are making a difference
• How you and your community are helping to make the world safer

Share your challenge submissions in whatever format you communicate best, whether that's through art, writing, videos, or song.

To join the challenge, simply share your ideas to Instagram, Facebook, YouTube, Twitter, or TikTok with the hashtag #TurnBackTheClock.