Learn about how Arnold’s ear-cough reflex can make you cough when you clean your ears; why it’s important to teach your kids about giving when they’re learning about money; and a hidden letter in the alphabet that you already sing.

Learn about whether reading computer code is the same to your brain as reading another language; and a personality trait that could be key to lasting romance. Then, play along at home as we test your podcast knowledge in this month’s edition of Curiosity Challenge trivia.

Learn about how having hope for the future could protect you from risky behaviors like drinking and gambling; how your dog’s personality can change over time; and “limnic eruptions” — or, deadly exploding lakes.

Learn about why just because you want something doesn’t mean you like it; why Esperanto is the world’s most successful universal language; and a gene therapy injection in one eye that improved vision in both.

Learn about how a fever helps you get better; why the first reliable and widely available pregnancy test was the African clawed frog; and a potential breakthrough in the shockingly complicated traveling salesperson problem.

Learn about the “smellicopter,” a drone that can smell via a live moth antenna; why the “Dark Ages” weren’t as dark as you might think; and how simple word swaps can secretly trick your brain.

Learn about how hoarders’ brains see their belongings; why dolphins consciously lower their heart rates; and what scientists think happened before the big bang.

Princeton University Anthropology Professor Agustín Fuentes explains why race is a social construct — as in, biological race isn’t real. Then, learn how plants pass down “bad” memories to their offspring through epigenetics.

Award-winning scientist and science communicator Ainissa Ramirez explains how copper changed our language. Then, learn about the surprising health benefits of brown fat.

Learn how parents can get smarter about making big decisions, with author Emily Oster; and electron-capture supernovas.

Learn about why children write letters backward; how dogs know when you’re lying to them; and mountains on neutron stars.

Learn why phonics is the best way to teach kids to read; and how false science benefits from people who “trust science.” Plus: this month’s Curiosity Challenge trivia game!

Learn why self-control isn’t always good for you; why you can’t win an argument using facts; and what SETI is looking for.

Learn how to tap into your “gut feeling,” which knows more than you think it does; and why Earth's core is growing lopsided.

Learn about the record-breaking glowing kitefin shark; cities’ unique microbiomes; and the true origin of the Milky Way.