How do geckos stick to walls?

Hairspray seems simple… until you actually stop and think about it. How does it come out as a fine mist? Why doesn’t it dry up inside the can? How can it hold your hair in place without acting like glue? This week we’re unpacking the surprisingly clever chemistry behind one of th ... Show More

Great teaching doesn’t happen in isolation—it happens in community. In this bonus BCCE Community Conversation preview, Melissa talks with chemistry educator Dr. Joanne Stewart about communities of practice: groups of educators who come together to share ideas, solve problems, and ... Show More

What happens when some listeners challenge one of our past episodes? This week we’re revisiting our silicone episodes after several listeners pointed us toward new research. Along the way we answer questions about mosquito wristbands, waterproof mascara, stubborn adhesives, and w ... Show More

We encounter sticky surfaces and sticky substances everyday, but what exactly IS “stickiness?” In this episode of Stuff to Blow Your Mind, Robert and Joe discuss the physical properties of stickiness and look at some very sticky examples from the natural world.See omnystudio.com/ ... Show More

We encounter sticky surfaces and sticky substances everyday, but what exactly IS “stickiness?” In this episode of Stuff to Blow Your Mind, Robert and Joe discuss the physical properties of stickiness and look at some very sticky examples from the natural world. See omnystudio.com ... Show More

We encounter sticky surfaces and sticky substances everyday, but what exactly IS “stickiness?” In this episode of Stuff to Blow Your Mind, Robert and Joe discuss the physical properties of stickiness and look at some very sticky examples from the natural world. See omnystudio.com ... Show More

To activate or loosen their grip on a surface, geckos extend and angle or retract tiny toe hairs that create contact points. Clara Moskowitz reports    Learn more about your ad choices. Visit megaphone.fm/adchoices 

<p>What makes things sticky? Listener Mitch from the USA began wondering while he was taking down some very sticky wallpaper. Our world would quite literally fall apart without adhesives. They are almost everywhere – in our buildings, in our cars and in our smartphones. But how d ... Show More

<p>Ever reach out to the spirit world with an ouija board? Or stare into a dark mirror for Bloody Mary? Perhaps peer-assisted levitation was more your style. In this episode, Robert and Julie bust through the fantasy of these paranormal parlor tricks and examine the underlying sc ... Show More

Ants and spiders are able to defy gravity -- but how do they do it? We'll learn about how awesome their feet are and how one predator takes advantage of these powers. Plus: A very challenging mystery sound and a Moment of Um that answers the question, "How do bananas ripen other ... Show More

In this classic episode of Stuff to Blow Your Mind, Robert and Joe discuss the curious biology of North America’s horned lizard – especially their ability to squirt blood from their eyes – as well as some culture and history surrounding their existence. (originally published 8/13 ... Show More