Learn about why engineers tested a temporary “smart tattoo” that emits light via OLEDs; a female vampire bat that adopted her best friend’s baby after the friend’s death; and how you can sharpen your mind with device-free quiet time.

Learn how Seabed 2030 will map the ocean floor; how our cells make soap; and how crows understand the concept of zero.

Learn about why life is based on carbon and not silicon, whether you should be using plastic or wood cutting boards, and how jealous feelings can help maintain friendships.

You can reduce the need for nodding off after dinner with a few simple steps.

Learn about how saturated fat can make it harder for you to focus; why it matters that animals have regional accents; and why Mars used to have rings.

Learn about how a struck match creates fire; why "the island rule" makes some animals huge and other animals tiny; and how you can melt glass at home, with some help from Netflix reality glassblowing competition “Blown Away” host Nick Uhas.

These insects emit a glow a yellow-green hue.

Author Priya Parker explains how to fix the biggest mistakes you’re making in your virtual gatherings. Plus: learn about how language can affect the amount of pain a bilingual person experiences; and why the world’s largest waterfall probably isn’t what you think it is.

Daddy longlegs are one of the most venomous critters out there.

Learn how atomic clocks and how GPS clocks work, with help from the engineer who made GPS clocks possible: Hugo Fruehauf. But first, you’ll learn about how Harvard researchers finally figured out why stress can turn your hair gray.

How much of communication really is nonverbal? Why is darkness faster than the speed of light? How can you tell if you’re burned out — and how do you recover?

Learn about how scientists are predicting viral content by measuring people’s brain activity; how Tuvan throat singers are able to produce two notes at once; and how effective facemasks are in preventing the spread of the coronavirus.

Learn about how our sun is different from similar stars; how deep sleep literally cleans your brain; and the psychology behind why some psychopaths are serial killers, while others are CEOs.

Bill Nye explains why science isn’t just a body of knowledge — it’s a process. Plus: frogs with noise-canceling lungs and why your stomach growls when you’re hungry.

Learn about why quitting smoking is good for your mental health, too; and why it’s possible to practice too much. We’ll also answer a listener question about how to get people to believe science, with some help from a special guest, Bill Nye.