The "Earth Hour" initiative, also known as "An hour for the planet", mobilizes citizens around the world every last Saturday in March to take action to protect nature and the climate. This can take the form of turning off the lights for an hour, or taking concrete action in favor of the planet.

On March 23, 2024, CERN joined the action by switching off the lights at the Globe of Science and Innovation and the Science Portal from 8:30 pm to 9:30 pm.
Since its launch in 2007 by WWF, the "Earth Hour" initiative has rapidly established itself as one of the world's most important campaigns for climate and environmental protection. It mobilizes thousands of cities and companies in over 190 countries.

For more information on the Earth Hour initiative, please visit earthhour.org

To find out more about CERN's efforts to protect the environment, visit: https://hse.cern/services-support/environmental-protection