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MAXIMUM EFFORT! Give us a hand and SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ Axolotls are special salamanders. Not only to they stay in their juvenile form their whole lives, they can regenerate entire limbs! Studying how they do it could change the way we treat human limb injuries. Special thanks to the Dallas Zoo! References: http://bit.ly/2Gkoihd ----------- FOLL...

Behold the COSMOTRON 5000!!! Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Subscribe to It's Okay To Be Smart: http://bit.ly/iotbs_sub How to build your own cloud chamber particle detector and test relativity at home: http://www.fromquarkstoquasars.com/make-a-cosmic-ray-detector-at-home-and-test-relativity/ Carl Sagan dis...

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 ↓ A summertime look at why we sweat, why we burn, and why our fingers wrinkle in the pool. References/further reading: Eccrine and apocrine sweat glands: https://www.inkling.com/read/dermatology-bolognia-jorizzo-schaffer-3rd/chapter-35/eccrine-apocrine-and-...

How does math keep a folded slice from drooping? And what does pizza have to do with the speed of light? Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate How a 19th Century Math Genius Taught Us the Best Way to Hold a Pizza Slice: http://www.wired.com/2014/09/curvature-and-strength-empzeal/ Planet Money pizza price compariso...

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Get your #ididascience shirt here! http://dftba.com/besmart Tweet this ⇒ http://bit.ly/OKTBScmb Share on FB ⇒ http://bit.ly/OKTBScmbFB ↓ More info and sources below ↓ Vintage Project Echo footage from “The Big Bounce” (1960): https://archive.org/details/BigBounc1960 Listen to...

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Try CuriosityStream today: http://curiositystream.com/smart Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ Earth has seasons, but what about the rest of the planets in the solar system? Let’s take a tour from Mercury to Plu...

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 ↓ Develop your own science truthiness detector! My favorite places to get science news: http://bit.ly/1dpkiI4 (Now as an RSS/OPML file thanks to @doodlewhale!! https://dl.dropboxusercontent.com/u/8365578/feedly.opml ) Also check out my public Twitter lists...

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 ↓ Pucker up. I'm gonna lay some science on you! When you really think about it, kissing is an odd human behavior. You know, all the rubbing of our faces all over each other. So there must be a good reason why we do it, right? From motherly comforts to testi...

Besides humans, of course. ↓ More info and sources below ↓ Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Subscribe to It's Okay To Be Smart: http://bit.ly/iotbs_sub Gates Foundation info on the world's deadliest animal, mosquitoes: http://www.gatesnotes.com/Health/Most-Lethal-Animal-Mosquito-Week Bill Gates' TED talk on m...

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 are a beautiful and curious snowflake. SUBSCRIBE, it's FREE! http://bit.ly/iotbs_sub Snowflakes are infinitely beautiful, but are they infinitely unique? Here's all the science behind Earth's favorite cold crystal. More reading: Wilson Bentley, The Sn...

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Check out The Great Courses Plus: http://ow.ly/OE9y301cRfI Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Get yourself an awesome IOTBS shirt! http://dftba.com/besmart This is a cool old movie from 1941 about how the eye works:...

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate “An Inconvenient Sequel” is former Vice President Al Gore’s newest film 🌎🎥 Learn more: http://InconvenientSequel.com #BeInconvenient ↓↓↓ More info and sources below ↓↓↓ News about climate change is often full of doom, guilt, and anxiety. This can make many people reluctant t...

...or why do we live on an onion made of magma? Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Subscribe to It's Okay To Be Smart: http://bit.ly/iotbs_sub Thanks to Miles Traer and Mike Osborne for geophysics help on this one! Why does Earth have a liquid core, and how do we know? http://scienceblogs.com/startswithabang/20...

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 ↓ If you traced your family tree back 185 million generations through evolution, you wouldn't be looking at a human, a primate, or even a mammal. You'd be looking at a fish. So where along that line does the first human show up? The answer may surprise you!...

You can learn more at https://curiositystream.com/smart Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ **We said 30 days free, but CuriosityStream is feeling extra generous and is giving our viewers the first 60 days free!!** Do you remember having a cold in 5th grade? Or the flu a couple years ago? Your immune system does. Our bodies hold many...

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate This is part 3 of our special series on Human Ancestry! Watch the entire series here ►► http://bit.ly/OKTBSHuman ↓↓↓More info and sources below ↓↓↓ In part 3 of our special series on human ancestry, we investigate how closely related we all really are. Basic math tells us that...

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Head to Physics Girl for electromagnetic explosions! https://youtu.be/AXOa66-k9MA Musical tesla coils are awesome. I went to visit Arc Attack, the legendary musical tesla coil band, to find out how they work (and to stand in between them!) I brought my friend Physics Girl alon...

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Part 4 of our special series on Human Ancestry. Watch it all ►► http://bit.ly/OKTBSHuman Watch Mutant Menu on BrainCraft: https://youtu.be/NrDM6Ic2xMM ↓↓↓More info and sources below ↓↓↓ In part 4 of our special series on human ancestry and evolution, we look into the future. N...

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Start your Audible trial today: http://www.audible.com/ok Tweet this ⇒ http://bit.ly/OKTBSmc Share on FB ⇒ http://bit.ly/OKTBSmcFB ↓ More info and sources below ↓ Check out Destin’s video on Smarter Every Day: “DEVIL FACIAL TUMOR DISEASE” https://www.youtube.com/watch?v=hol33g...

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 ↓ Why are sounds scary? They're just vibrations. Blame your brain! Click here to SUBSCRIBE, it's FREE! http://bit.ly/iotbs_sub Enter a dimension of sound, science, and fearMusic by Podington Bear http://podingtonbear.com/ References and more: What's That Bu...

Check out the largest gathering of mammals on Earth! Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Subscribe to It's Okay To Be Smart ►► http://bit.ly/iotbs_sub Visit Bat Conservation International to learn more about these amazing species and what we can do to protect them: http://batcon.org/ Thanks to Dr. Sharon Swartz...

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Follow me to Infinite Series for 4-Dimensional Bees! https://youtu.be/X8jOxEGVyPo Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ From spirals to spots to fractals, nature is full of interesting patterns. Many of these patte...

Sunspots, solar flares, coronal mass ejections, OH MY! Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Subscribe to It's Okay To Be Smart: http://bit.ly/iotbs_sub ↓ More info and sources below ↓ As massive magnetic fusion reactors go, the sun is pretty awesome. How a CME forms: https://www.youtube.com/watch?v=xsXqNNQsS7I Mo...

Learn more about Surfshark VPN at: https://surfshark.deals/besmart SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ At CERN, physicists are searching for answers to some of the biggest questions ever — like how the universe started and where everything comes from. To get one step closer to an answer, CERN scientists recreated the first moment afte...

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 ↓ SPOILERS: It doesn't end well. Special thanks to Ethan Siegel and Sean Carroll for help with this episode: http://preposterousuniverse.com/ https://medium.com/starts-with-a-bang/ More interesting things that will happen in the future: http://en.wikipedia....