Cynthia Littleton is Business Editor of Variety, based in New York. She has covered the television beat for more than 20 years. She began her career at United Press International, followed by stints at Broadcasting & Cable magazine, Variety, and The Hollywood Reporter, where she rose to Editor before rejoining Variety in 2007. Littleton co-hosts with Andrew Wallenstein Variety’s weekly podcast “Strictly Business,” featuring conversations with industry leaders about the business of entertainment. 1

Melissa Sun is the Sierra Club's Director of Entertainment Partnerships. Sun is tasked with creating meaningful opportunities for celebrities to help Sierra Club protect clean air, water and open spaces. The group aims to explore, enjoy, and protect the wild places of the earth.

Heidi Kindberg Goss is director, Sustainability at WarnerMedia, responsible for overseeing HBO Green and managing the sustainable production program on all scripted HBO and HBO Max U.S.-based lead productions. Prior to joining WarnerMedia, Kindberg served as director, Environmental Sustainability at Sony Pictures Entertainment (SPE), where, over her tenure, she developed and managed lot and production sustainability programs and communicated and collaborated with production executives and crew to ensure the success of these programs. At SPE, she oversaw Columbia, Screen Gems, TriStar and Sony Picture Television shows, including production carbon tracking and 200+ departmental best practices. 

A renowned thought leader, international speaker, policy maker, community liaison, trainer, and facilitator, Dr. Mustafa Santiago Ali serves as the Vice President of Environmental Justice, Climate, and Community Revitalization for the National Wildlife Federation. He is also the founder of Revitalization Strategies, a business focused on moving our most vulnerable communities from “surviving to thriving.”

Before joining the National Wildlife Federation, Mustafa was the senior vice president for the Hip Hop Caucus, a national non-profit and non-partisan organization that connects the hip-hop community to the civic process to build power and create positive change.

Zena is President of Green Spark Group and works with studios such as Disney/21st Century Fox, NBCUniversal, HBO and Amazon to implement sustainable production practices on film and TV shows, consults with industry organizations such as Creative BC, PGA Green, and corporate clients. She is the Creative Director of the Sustainable Production Forum, a conference dedicated to sustainability in entertainment and host of the Sustainable Production Podcast (in development).  Zena holds a master’s degree from Harvard University in Sustainability and Environmental Management.