Today is #EarthDay . At this difficult and unprecedented time, we're sharing stories of #EarthOptimism: what's working to protect the future of our planet. By focusing on successes in conservation and sustainability, we can find inspiration even in the face of immense challenges.

We're hosting the @EarthOptimism digital summit, a three-day event where you can tune in to hear from more than 100 speakers in nearly 50 sessions on what actions are making a difference. http://earthoptimism.si.edu  #EarthOptimism