Are we breathing recycled air on airplanes?

CSI makes forensic science look fast, easy, and almost magical. But how much of that is actually true?This week we’re joined by forensic chemist and graduate student Nicki Stewart to answer your questions about forensic science. We talk about crime shows, fingerprints, toxicology ...  Show more

What happens when the world’s largest gathering of chemistry educators decides to try something new? This summer we’re partnering with the Biennial Conference on Chemical Education (BCCE) for a special series of Monday episodes. In this kickoff conversation, Melissa sits down wit ...  Show more

This week we’re breaking down “Paper Airplane”. The office competes in a paper airplane contest, Darryl helps Andy with his first industrial acting job and some romantic relationships are tested. We hear clips from actor Pete Hulne who played the HRPDC executive, Angela talks abo ...  Show more

Scientists now agree that COVID spreads via airborne transmission. But during the early days of the disease, public health officials suggested that it mainly did so via close contact. The subsequent back-and-forth over how COVID spread brought science journalist Carl Zimmer into ...  Show more

Helium is full of contradictions. It’s the second most abundant element in the universe, but is relatively rare on Earth. It’s non-reactive, totally inert—yet the most valuable helium isotope is sourced from thermonuclear warheads. And even though we treat it as a disposable gas, ...  Show more

Peanut allergies have surged dramatically in recent decades, and scientists are still working to understand why. In this episode, journalist Maryn Mckenna, who recently authored an article on the subject, and host Rachel Feltman explore the latest research on causes, treatments a ...  Show more