Be Smart.

You can learn more at https://curiositystream.com/smart Stay curious and SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ Have you ever noticed that warning about raw or undercooked seafood at the bottom of restaurant menus? Ever wondered why it’s there? Because fish carry a ton of parasites, and if they aren’t prepared correctly then those parasites can make it into your...

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 Greetings, fellow Homo sapiens. Our species is the only remaining member of the genus of upright, walking...

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 ↓ Thank you to Nord VPN for supporting PBS. For more information go to: https://nordvpn.com/iotbs and use code: iotbs We’re on PATREON now! Join the community ►► https://www.patreon.com/itsokaytobesmart SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/...

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 ↓ Earth’s climate is changing in a big way, and it’s because there's more carbon dioxide in the atmosphere than at any point in our species’ history. But Earth’s climate has changed before. How do we know that this time we’re the cause? We know thanks to ti...

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 the forest is more than the trees SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub Walk into any forest, and beneath your feet is an elaborate social network that helps make life on Earth possible. It’s called the “Wood Wide Web”, a mas...

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 If everyone would jus...

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 Everyone lies. Even you and even me. We lie about small things and we lie about big things. We lie to help our...

You can learn more at https://curiositystream.com/smart SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ The edge of everything used to be the edge of the map. But now, thanks to what we know about astrophysics and the universe, the edge of everything might not even exist… REFERENCES: http://www.pnas.org/content/15/3/168 https://arxiv.org/abs/1101...

We’re on PATREON! Join the community ►► https://www.patreon.com/itsokaytobesmart Follow me to Animal IQ: https://youtu.be/yPrQ3Pl-iEM ↓↓↓ More info and sources below ↓↓↓ Here’s a thought: What IS a thought? I know it involves my brain, and my brain is made of neurons. And my brain’s neurons are listening to other neurons all over my body. But how do those neurons actually work? Maybe you’ve heard...

Check out Two Cents! https://www.youtube.com/channel/UCL8w_A8p8P1HWI3k6PR5Z6w SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ The flu might feel like some minor illness that you don’t need to worry about much, but tens of thousands of people still die from it every year. And back in 1918, Flu killed up to 5% of the world’s population. Could a flu...

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 ↓ The fastest animal in nature isn't what you think it is. It's way, way smaller than that. Nature's tiniest creatures warp the laws of physics, and they do it in ways that even human engineers would gawk at. Using the power of super slow-motion macro video...

Thank you to Draper and its Hack the Moon initiative for supporting PBS Digital Studios | Learn more at https://wehackthemoon.com Physics Girl explores how We’ll Find the Aliens in Our Solar System! https://www.youtube.com/watch?v=zfqpYDVhXd8&t=1s Looking up at the stars makes you wonder: what and who is out there? And why haven’t we seen any other intelligent civilizations given the vast size and...

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 ↓ The largest pterosaurs like Quetzalcoatlus were closer in size to airplanes than birds. No flying animal alive today comes close to their huge size. So did giant pterosaurs actually fly? I went to see the fossil bones of the largest pterosaur that ever li...

It’s the Great American Read! Vote for America's favorite novel: https://to.pbs.org/2Jes2X5 ↓↓↓ More info and sources below ↓↓↓ English is a confusing language for many reasons. But the irregular verbs might be the most confusing part. Why is “told” the past tense of “tell” but “smold” isn’t the past tense of “smell”? It turns out that the study of irregular verbs can teach us a lot about how lang...

You can learn more at https://curiositystream.com/smart Go check out Sound Field! http://bit.ly/2HH9sG1 SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub More people have food allergies than ever before. Peanuts, tree nuts, shellfish, eggs, and even milk… the list of possibly dangerous foods seems to get longer every day. But why do some people’s bodies have deadly reactions food? An...

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 It never gets dark anymore. Not REALLY dark, anyway. Not like it used to. Light pollution is not only making it more difficult to see the night sky, but it's also affecting our health. For th...

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 Every year, hundreds of millions of people voluntarily turn their lives upside down by setting their clock...

Thanks to Wix for supporting PBS Digital Studios. To learn more: https://Wix.com/go/OKAY Help us out and complete the 2018 PBS Digital Studios survey! https://to.pbs.org/2018YTSurvey ↓↓↓ More info and sources below ↓↓↓ I noticed something weird about Disney Princesses lately. Naturally, I had to examine it through the lens of science. The answer led me to new knowledge about human development, the...

Thank you to CuriosityStream for supporting PBS! For more information, go to https://curiositystream.com/smart and USE code SMART. ↓↓↓ More info and sources below ↓↓↓ PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY Follow me to Overview on PBS Terra! https://www.youtube.com/watch?v=hjez0W8SPXc Glass is made of sand, which is a kind o...

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 ↓ Head over to Animal IQ on Terra: https://youtu.be/Nc3mUNkJZZk Celebrate Earth Day with other PBS Channels! https://bit.ly/32nmIsp We’re on PATREON! Join the community ►► https://www.patreon.com/itsokaytobesmart SUBSCRIBE so you don’t miss a video! ►► http...

Learn more about your personal DNA story by going to https://23andMe.com/okay SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ What’s the largest river on Earth? If you said “the Amazon”… you’re only half right. Scientists have discovered an even bigger river in South America, and it’s in the sky above the Amazon rainforest. Turns out, this sky ri...

You can check out our sponsor LastPass here: http://bit.ly/2E9zcY6 SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ Honeycomb. Strawberries. Flower pods. Some people find these things incredibly scary. We call this extreme fear trypophobia. But why does it exist? REFERENCES: http://bit.ly/2NvhWki ----------- FOLLOW US: Twitter: @DrJoeHanson @okayt...

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 Viruses keep jumping out of nature and into humans and getting us very sick in the process. So why do zoonotic...

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 ↓ Follow me to The Brain Scoop: https://youtu.be/6vOzt-YQjIA 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 People say insects are the food of the future....

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 ↓ More moon rocks on Smarter Every Day ►► https://youtu.be/QxZ_iPldGtI And Objectivity ►► https://youtu.be/yvhLBzsDwSQ SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub Fifty years ago, we sent the first astronauts to walk on the moon’s face....