Learn about the world’s first vending machine that was invented nearly 2,000 years ago; why scratching an itch can make it spread; and, why you probably don’t realize it when your beliefs change.

Learn about EMD Performance Materials; why packaging innovation is a vital component in developing new technologies; and what it takes from a business standpoint to change the way we interact with computers and other devices in our daily lives.

Learn about what happened when scientists put antimatter through the double-slit experiment; how a role-playing game could test your personality better than an actual personality test; and why more animals don’t reproduce asexually.

Learn about the replication crisis facing researchers in the social and life sciences from a special guest: Professor Joseph M. Reagle Jr., author of the new book “Hacking Life: Systematized Living and Its Discontents.” You’ll also learn why white holes c

Learn about a new phonon laser that uses sound instead of light; a counterintuitive trick to get your kids to eat vegetables; and a cognitive bias that explains why most people think they’re better than other people.

Learn about how the ancient Greeks knew the Earth was round; why being passionate about your job can backfire; and why you shouldn’t worry if you find a hair in your food.

Learn about the factors that determine how other people see you with special guest Vivian Zayas, Director of the Personality, Attachment, and Control Laboratory at Cornell University. Plus, learn about why it’s possible to ask for too much advice.

Learn about how studying ancient cities can help us plan modern cities from author Monica L. Smith, an archaeologist and professor in the department of anthropology at UCLA. Plus, learn what happens to light when you turn off the lightswitch.

Learn about the key ingredients for forging a friendship; why it’s so hard to make decisions with friends; and what it would mean if dark matter doesn’t exist and the law of gravity is wrong.

Learn about potential drawbacks to life hacking from Professor Joseph M. Reagle Jr., author of the new book “Hacking Life: Systematized Living and Its Discontents.” You’ll also learn why your fingers get pruney when they’re soaked in water.