(DC) (DC Environmental Film Festival) For over 30 years, the Environmental Film Festival in the Nation’s Capital has been inspiring our community through the power of film to incite change and take action so that we can preserve our planet for future generations. We harness the power of film and community to illuminate, celebrate, and inspire positive and lasting action for our planet. Each March, we bring the world’s largest green film festival to museums, embassies, universities, and other cultural institutions across Washington DC.