What slogan was put forward by the 1972 United Nations Conference on the Human Environment?

The slogan is "There is only one Earth".

Environmental protection and sustainable development are issues of common concern to mankind. The Declaration on the Human Environment adopted by the United Nations at the First Conference on the Human Environment in 1972 put forward the slogan "There is only one Earth" and included June 5th every year is designated as World Environment Day.

June 5, 2023 is the 50th World Environment Day. This year’s slogan is “Reduce Plastic, Pick Up Plastic”, China’s theme: “Building a modernization in which man and nature are harmonious”, and the world The significance of Environment Day is to remind the world to pay attention to the state of the earth and the harm to the environment caused by human activities.