A leader of NASA's Mars Perseverance rover team explains what we've learned about the red planet since the rover landed and lays out the mission to find — and return — evidence of life. Plus, acronyms galore!

Dr. Igor Koralnik explains his research on the neurological impacts of Covid-19, especially with non-severe cases.

Harold McGee changed the culinary world in the ’80s with his book on the science of cooking. His new book moves up the face to the nose, breaking down the molecules that make up all the smells around us. He explains why some scents echo each other, how dogs can sniff out cancer, and what happens when a coronavirus takes away your sense of smell.

The chemicals we rely on for practically everything are slowly threatening our health, happiness, and the future of our species. Dr. Shanna Swan walks us through the evidence.

Dr. Siddhartha Mukherjee takes us through his investigation into why low-income countries seem to have largely escaped the pandemic’s wrath — and why they still need to get vaccines.

* But didn't know to ask. Rebecca Wragg Sykes will also tell us about the art, language, and mysterious extinction of our brawny cousins.

As the first National Climate Advisor, Gina McCarthy may have the most important — and toughest — unelected job in America. So ... how’s that going?

Sociologist Zeynep Tufekci takes news outlets to task for how our coverage has hindered the response to COVID-19 and explains why no matter what variant is going around your community, you should still get a vaccine — any of them — as soon as you are eligible.

Gillian Jacobs (Community, Love) and Diona Reasonover (NCIS) get back in touch with their science roots and turn the tables on us in a new segment, Grill Bill and Query Corey! Check out Gillian and Diona's new podcast Periodic Talks and subscribe here: https://link.chtbl.com/PeriodicTalks

How does exercise work? Should all runners go barefoot? And is sitting really the new smoking? Daniel Lieberman shines some science on common exercise myths.