Lise Lykke Steffensen is CEO of NordGen, which helps run the Svalbard Global Seed Vault in Norway.

Venkat Srinivasan, director of the Argonne Collaborative Center for Energy Storage Science, explains battery technology.

Astronomer Laura Trouille and Nick Lake, manager of Theater Experience, describe the Adler Planetarium’s interactive Climate Change and Me show.

Tom Appel, publisher of Consumer Guide Automotive, discusses the car market in the new year.

Abigail Derby Lewis, Senior Conservation Ecologist at the Field Museum of Natural History, explains why pollinators are important for the ecosystem.

Raj Vable founded Young Mountain Tea, an equitable and sustainable business that is transforming the tea industry.

Michelle Nichols, Director of Public Observing at Chicago's Adler Planetarium, describes meteor showers and other celestial wonders in the sky.

Chelsea Mastrocola, Director of Business Development at Brightly, discusses carbon offset credits.

Jeff St. John, director of News and Special Projects at Canary Media discusses how the Inflation Reduction Act might change with the new Trump administration.

Scott Isaksen, National Sales Director at Essency Water Heaters, describes a sustainable hybrid electric alternative for heating water in your home.

Tom Appel, publisher of Consumer Guide Automotive, discusses gasoline blends and test drives a Subaru EV.

Gene Giacomelli is Professor Emeritus and former director of the Controlled Environment Agriculture Center at the University of Arizona. 

Jeff St. John, director of news and special projects at Canary Media, discusses AI and the power grid.

Rebecca Chesney is a food anthropologist who discusses how we can reduce food waste.

Nick Rubino, owner of Sparkie Electric, discusses backup power systems homeowners and businesses use, even in extreme weather.

Carey Gillam is Managing Editor of The New Lede. Her latest book is The Monsanto Papers: Deadly Secrets, Corporate Corruption, and One Man's Search for Justice. 

Brendan Daley is Vice President of Operations at Lincoln Park Zoo, where admission is free.

Eunice Jung is head of partnerships at the company Future, which has created a debit card that rewards sustainable low-carbon purchases. 

Ines Sommer is creator of The Hills documentary: how steel mills on Chicago's Southeast side have released contaminants into the environment.

Julia Kurnik discusses the the World Wildlife Fund's new initiative, Farmers Post.