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Harold McGee talks about how our sense of smell affects taste, why things smell the way they do and the ways different chemicals combine to create surprising (and sometimes distasteful) odors.

The Pfizer-BioNTech COVID-19 vaccine was developed fast. But a leading vaccine expert says its important for consumers to know the companies "haven't cut corners" in the clinical science.

As we look back at the year, we wanted to share some of our favorite episodes of the pod. This list showcases the episodes that stayed with members of the Code Switch team, even amidst all the churn.

After declining most of the fall, new infections are up again in more than half of U.S. states, worrying experts about what the holiday season may bring.

Employers are firing workers for refusing to comply with vaccine mandates. They represent only a tiny fraction of overall employees, not even 1% in some workplaces. But it can add up to thousands.

Stream Seasons 1-4 now with KPBS Passport / Watch Season 1 Encore Tuesdays, Oct. 21 - Nov. 25, 2025 at 9 p.m. on KPBS 2. Professor Jasper Tempest and the team untangle a series of knotty crimes ranging from an unexplained fire in a student block to the mystery of an entire family found dead in their home. Meanwhile, Professor T is dominated and perplexed by the women in his life, from his mother to the love of his life Christina, and his new therapist, Dr. Helena.

Lee Merritt is a back surgeon with a long history of spreading COVID misinformation. But she renewed her medical license last month.

The district hopes to transition back to normal in-person operations by the spring 2022 semester if the health situation improves.

Big wildfires create their own weather, and can even spawn tornadoes swirling with smoke and flame. Researchers are trying to determine how often they occur.

Mythical elves often called the "hidden people" are a key part of Iceland's folklore.