Images from the 2016 Planet Forward Summit on Sustainable Cities

The 2016 Planet Forward Summit on Sustainable Cities was held April 21-22. (Photos by The George Washington University)

The President of the National League of Cities, Melodee Colbert-Kean, gave the first keynote.

GW students Alejandro Garcia and Farida Fawzy answer questions about a video they made. Frank Sesno, Host & Creator of Planet Forward, led the event.

Frank Sesno, Host &amp; Creator of Planet Forward, led the event.

Frank Sesno, Host & Creator of Planet Forward, led the event.

Sesno and Keynoter EPA Administrator Gina McCarthy take questions from the crowd and via Pigeonhole.

Thomas Lovejoy, a rainforest expert and biologist, spoke with University of Florida student Shelby Thomas.

Kathleen Merrigan, GW's Executive Director of Sustainability and former Deputy Secretary of the USDA, read an excerpt from "A Taste of Generation Yum" at her lunch talk.

Gensler's Jordan Goldstein did a presentation on the future of buildings and their connection to the environment.

An audience member gets the mic to ask the panel on stage a question.

Sesno speaks with Chris Policinski, Land O'Lakes President and CEO.

Urban Agriculture panelist Che Axum, from the University of the District of Columbia, answers a question.

Huntsville, Ala., Mayor Tommy Battle offered to bring students to Huntsville to tell the story of the city.

Storyfest winners who were in attendance are flanked by Ajay Markanday from the UN-FAO and Sesno.

From mayors to farmers to scientists to policymakers. Here are a few of our favorite snapshots from the 2016 Planet Forward Summit!

How do you move the Planet Forward? Tweet us @planet_forward or contribute to the conversation with your own story.