Joe Hanson

Be Smart.

We give you deep answers to simple questions about science and the rest of the universe. And also dad jokes. Be Smart is hosted by Joe Hanson, PhD. He's a molecular biologist and an award-winning science communicator and journalist

Autor

Joe Hanson

Categoria

Education

Último episódio

5 de nov de 2026

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Episódios

The Strange Science of Why We Dream 11.10.2026

Take the PBS Digital Studios audience survey: https://to.pbs.org/2021surveyWe’re on PATREON! Join the community https://www.patreon.com/itsokaytobesmart↓↓↓ More info and sources below ↓↓↓Uploaded 22-12-21It would be a lot easier to study the science of dreaming if we weren’t asleep every time we did it. Why do we dream? What does dreaming do for our brains? How did dreaming evolve? Here’s a look a...

What Is Nothing? 10.10.2026

Thank you to M1 Finance for Supporting PBS. For more information please go to https://m1finance.com/besmart Take the 2023 PBS Digital Studios audience survey: https://to.pbs.org/pbssurvey2023a1Uploaded 23-11-21↓↓↓ More info and sources below ↓↓↓This is a video about nothing. Hope you learn something! Sponsor disclaimer:- All investing involves risk, including the risk of losing the money you inves...

What's the Largest Living Thing On Earth? 09.10.2026

Check out American Veteran on @pbsvoices ►► https://youtu.be/P8bt1bwllZg We’re on PATREON! Join the community https://www.patreon.com/itsokaytobesmart↓↓↓ More info and sources below ↓↓↓Uploaded 06-11-21The biggest thing that has ever lived on Earth… is a tree? Hard to believe, but it’s true. Travel with me to the Rocky Mountains of Colorado to go inside a giant aspen clone, the most massive specie...

Sand Dunes Shouldn’t Exist (Here’s Why They Do) 08.10.2026

Check out Overview on @pbsterra ►► https://youtu.be/WWrb1iyCLlI We’re on PATREON! Join the community https://www.patreon.com/itsokaytobesmart↓↓↓ More info and sources below ↓↓↓Uploaded 20-10-21How can sand, blown by the wind, form such intricate and beautiful patterns as ripples and dunes? The answer is a surprising secret of self-organization. In this video, we travel to Great Sand Dunes National...

I Can't Believe We're Making Another COVID Video 07.10.2026

Check out PBS Vitals ►► https://youtu.be/xus08qnUxPEWe’re on PATREON! Join the community https://www.patreon.com/itsokaytobesmart↓↓↓ More info and sources below ↓↓↓Uploaded 08-10-21I guess we’re still doing this. References: https://docs.google.com/document/d/1-xoLMZfumSmb1v7B3QmFD5pTC87GYeGEnlSXKg0bCk0/edit SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub-----------Special thanks t...

The Mathematical Code Hidden In Nature 06.10.2026

Check out MEGAWOW from @PBSKIDS ►► https://youtu.be/meU4f31gqYIWe’re on PATREON! Join the community https://www.patreon.com/itsokaytobesmart↓↓↓ More info and sources below ↓↓↓Uploaded 22-09-21How do zebras get their stripes? How do leopards get their spots? And how do giraffes get their giraffe-shaped thingies, whatever they are called? Would you believe the answer is… math? This is the story of a...

The Mystery of Earth's Disappearing Giants | IN OUR NATURE 05.10.2026

“In Our Nature” is a NEW special limited series on It’s Okay To Be Smart! We’re on PATREON! Join the community ►► https://www.patreon.com/itsokaytobesmart↓↓↓ More info and sources below ↓↓↓Uploaded 16-09-21Seemingly distant ecosystems, even half a world apart, are connected in surprising ways. In this special limited series, Emily Graslie and Trace Dominguez join me as we explore the universal rul...

Why Dung Beetles Stare At the Stars | IN OUR NATURE 04.10.2026

“In Our Nature” is a NEW special limited series on It’s Okay To Be Smart! We’re on PATREON! Join the community ►► https://www.patreon.com/itsokaytobesmart↓↓↓ More info and sources below ↓↓↓Uploaded 01-09-21Seemingly distant ecosystems, even half a world apart, are connected in surprising ways. In this special limited series, Emily Graslie and Trace Dominguez join me as we explore the universal rul...

These Butt-Tickling Ants Are Endangered Butterfly Bodyguards | IN OUR NATURE 03.10.2026

Check out "Out of Our Elements" on PBS Terra! https://youtu.be/tp-FsXHVFoU “In Our Nature” is a NEW special limited series on It’s Okay To Be Smart! We’re on PATREON! Join the community ►► https://www.patreon.com/itsokaytobesmart ↓↓↓ More info and sources below ↓↓↓ Seemingly distant ecosystems, even half a world apart, are connected in surprising ways. In this special limited series, Emily Graslie...

These Death-Eating Scavengers Are Real Life-Savers | IN OUR NATURE 02.10.2026

Thank you to Blinkist for supporting PBS. For more information and trial go to http://www.blinkist.com/OkayToBeSmart. “In Our Nature” is a NEW special limited series on It’s Okay To Be Smart! We’re on PATREON! Join the community ►► https://www.patreon.com/itsokaytobesmart ↓↓↓ More info and sources below ↓↓↓ Seemingly distant ecosystems, even half a world apart, are connected in surprising ways. In...

Plants Are Smarter Than You'd Expect 01.10.2026

Plants can do some amazing things. But how do they respond to their environment with no brain? ↓ More info and sources below ↓ Learn more/references: “What a Plant Knows” by Daniel Chamovitz http://amzn.to/2bfvdOg “The Secret Life of Plants” by Peter Tompkins and Christopher Bird http://amzn.to/2bczCTf (this book is full of bad science mumbo jumbo, but it’s where the Cleve Backster story comes fro...

This Is How Astronauts Drink Coffee In Space! 01.10.2026

PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ You can learn more at https://curiositystream.com/smart SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub I love coffee. Like, a lot. You know who else loves coffee? Astronauts! And also the people who help them do awesome things in space (I...

Why Don't Birds Lay Square Eggs? 01.10.2026

PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub What is ”egg-shaped” even? I used to think it was the shape of a chicken egg. Then one day I saw a collection of eggs from lots of different bird species, and I realized just how many differe...

The Weird Reason Plants Aren't Black 01.10.2026

PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ We’re on PATREON now! Join the community ►► https://www.patreon.com/itsokaytobesmart SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub Why are trees and other plants green? Seems like a simple question. But the answer is full of surprises. U...

When Is Now? 01.10.2026

PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ We’re on PATREON! Join the community ►► https://www.patreon.com/itsokaytobesmart SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub When is now? Seems like a pretty simple question… just look at your watch. But do you and I share the same “no...

Why Geckos Are Sticky Without Being Sticky 01.10.2026

The sticky physics that let geckos do what they do! We’re on PATREON! Join the community ►► https://www.patreon.com/itsokaytobesmart ↓ More info and sources below ↓ Geckos can grip and climb almost anything. Walking up walls, hanging upside down… even from glass. It’s almost like they can defy gravity. How do they do it? The secret lies in nanotechnology. I’ll tell you how that works and how scien...

Does Someone Else Have Your Face? Doppelgängers Explained! 01.10.2026

To learn more about Brilliant, check out https://brilliant.org/BeSmart/ SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ They say everyone has a doppelgänger, but is that really true? This week we meet a young woman who found her own look-alike, and figure out how we actually recognize faces. TEST YOUR FACE MEMORY! Cambridge Memory Test http://bit...

Why Soap Is Our Secret Weapon Against Germs 01.10.2026

PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ We’re on PATREON now! Join the community ►► https://www.patreon.com/itsokaytobesmart SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub One of the most effective things you can do to protect yourself from catching a germ and becoming a statis...

The Surprising Species That Everything Else Depends On | IN OUR NATURE 01.10.2026

“In Our Nature” is a NEW special limited series on It’s Okay To Be Smart! SUBSCRIBE so you don’t miss the next episode! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ Seemingly distant ecosystems, even half a world apart, are connected in surprising ways. In this special limited series, Emily Graslie and Trace Dominguez join me as we explore the universal rules of life that tie tog...

Why Are There 7 Days In a Week? EXPLAINED 01.10.2026

PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ We’re on PATREON! Join the community ►► https://www.patreon.com/itsokaytobesmart SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub Why does everyone use a 7 day week, and where did it come from? Where do the names of the days come from? And...

Why We Should Launch Rockets From the Moon 01.10.2026

PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ Thanks to Brilliant for supporting PBS. Learn more at: https://brilliant.org/BeSmart We’re on PATREON now! Join the community ►► https://www.patreon.com/itsokaytobesmart SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub Half a century ago, a...

What Do Raindrops Really Look Like? 01.10.2026

Learn more about opportunities from KiwiCo here: https://www.kiwico.com/okay SUBSCRIBE so you never miss a video! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ What do raindrops look like? Exactly how we drew them as kids, right? Wrong! Teardrop-shaped rain is physically impossible. This week I went inside a vertical wind tunnel to bring you the true shape of rain. Special thanks...

Is Your Eye Color Real? 01.10.2026

PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ Check out Say It Loud from PBSDS ►► https://www.youtube.com/SayItLoudPBS SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub The eyes are often the first thing we see when we look at someone. And when you look at them up close, everyone’s eye...

Is There Life on Earth? 01.10.2026

I mean… how do you really know? SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ If we lived light years from Earth, how would we know there’s life here? Let’s take a look at the search for extraterrestrial life on habitable exoplanets, and discover what biosignatures would show someone else that we’re here. REFERENCES: http://exoplanet.eu/ Kalten...

How The Toilet Revolutionized History 01.10.2026

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate This video was supported by Bill and Melinda Gates. You can check out the Gates Annual Letter here: http://b-gat.es/2lhhtmJ. ↓ More info and sources below ↓ We’re proud to collaborate with Bill and Melinda Gates for this week’s video! It may sometimes seem like things are gett...

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