Hier ein paar Ideen:
1. "The future is in our hands."
2. "Act now for a sustainable tomorrow."
3. "Don't wait for change, be the change."
4. "Save the planet, save ourselves."
5. "One small action can make a big difference."
6. "Together we can create a better future."
7. "The earth is our home, let's protect it."
8. "The time to act is now, before it's too late."
9. "Sustainability is not a choice, it's a responsibility."
10. "Think globally, act locally."
11. "Protecting the planet is protecting ourselves."
12. "Every little effort counts towards a sustainable future."
13. "We have the power to make a positive impact."
14. "The future of the planet is in our hands."
15. "Our actions today determine our tomorrow."
LG