Russell Zerbo, Advocate for the Clean Air Council, will describe a Philadelphia-based project of air quality monitors. Planet Philadelphia airs on 92.9 FM in NW Philadelphia & gtownradio.com, 4-5:00 PM ET the 1st & 3rd Friday/month.

Marilyn V. Howarth, MD, FACOEM, Adjunct Associate Professor, University of Pennsylvania, Deputy Director of the Philadelphia Regional Center for Children’s Environmental Health, and Director of the Community Engagement Core of the Center of Excellence in Environmental Toxicology. She talks about public health and climate change. Planet Philadelphia airs on 92.9 FM in NW Philadelphia & gtownradio.com, 4-5:00 PM ET the 1st & 3rd Friday/month.

Pouné Saberi, MD, MPH, Member of Board of Directors for Pennsylvania Physicians for Social Responsibility, and Adjunct Assistant Professor of Emergency Medicine, University of Pennsylvania. She discusses environmental medicine as a field and its relevance for all of us. Planet Philadelphia airs on 92.9 FM in NW Philadelphia & gtownradio.com, 4-5:00 PM ET the 1st & 3rd Friday/month.

Sean O’Leary, senior researcher, Ohio River Valley Institute - hydrogen hubs being planned in Ohio, West Virginia and Pennsylvania. Planet Philadelphia airs on 92.9 FM in NW Philadelphia & gtownradio.com, 4-5:00 PM ET the 1st & 3rd Friday/month.

Alex Bomstein, Executive Director, Clean Air Council - recent report by CNX, a large fracking company operating in Pennsylvania. Planet Philadelphia airs on 92.9 FM in NW Philadelphia & gtownradio.com, 4-5:00 PM ET the 1st & 3rd Friday/month.

Jessyn Farrell, J.D., Seattle’s Sustainability Director, and Rajiv Ravulapati, IMT's Associate Director of Government Engagemen (IMT); Seattle's new building emissions performance standards. Planet Philadelphia airs on 92.9 FM in NW Philadelphia & gtownradio.com, 4-5:00 PM ET the 1st & 3rd Friday/month. www.planetphiladelphia.com.

Nidhi Krishen, Deputy Director for Climate Solutions, Philadelphia Office of Sustainability; Philly’s new Energy Poverty Alleviation Strategy. Planet Philadelphia airs on 92.9 FM in NW Philadelphia & gtownradio.com, 4-5:00 PM ET the 1st & 3rd Friday/month. www.planetphiladelphia.com.

Stephan Crawford, Executive Producer of The Climate Music Project, a project that combines the talents and expertise of world class scientists, composers, musicians, artists, and technology visionaries. Planet Philadelphia airs on 92.9 FM in NW Philadelphia & gtownradio.com, 4-5:00 PM ET the 1st & 3rd Friday/month. www.planetphiladelphia.com.

Julie Be and Anya Rose are the composers and singers of Ants on a Log. Their songs inspire children to face challenges with joy and justice. Planet Philadelphia airs on 92.9 FM in NW Philadelphia & gtownradio.com, 4-5:00 PM ET the 1st & 3rd Friday/month. www.planetphiladelphia.com.

Enrique Gomez, Penn State University; sustainable batteries and some of the work on this topic his research group is doing. Planet Philadelphia airs on 92.9 FM in NW Philadelphia & gtownradio.com, 4-5:00 PM ET the 1st & 3rd Friday/month. www.planetphiladelphia.com.