TED Talks
Spencer Wells: A family tree for humanity
All humans share some common bits of DNA, passed down to us from our African ancestors. Geneticist Spencer Wells talks about how his Genographic Project will use this shared DNA to figure out how we are -- in all our diversity -- truly...
SciShow
This Is What Climate Change Feels Like
Hank brings you the SciShow news of the week. Recent record high temperatures and other extreme weather events around the world are climate change in action; a new fossil of an ancient human ancestor; some disturbing discoveries about...
Bozeman Science
Unit 2 Review - Speciation
Paul Andersen reviews the major concepts within the second unit of the new AP Biology framework. He starts by describing how life is organized into three domains. He explains how the history of life on the planet is characterized by mass...
SciShow
Why Are There Righties & Lefties
About 10% of the world population is left-handed. But why does handedness exist and what determines which hand is dominant? Scientists have suggested several theories, but the answer may well lie with evolution.
TED Talks
Svante Pääbo: DNA clues to our inner neanderthal
Sharing the results of a massive, worldwide study, geneticist Svante Pääbo shows the DNA proof that early humans mated with Neanderthals after we moved out of Africa. (Yes, many of us have Neanderthal DNA.) He also shows how a tiny bone...
SciShow
This Sturgeon-Paddlefish Hybrid Shouldn't Exist | SciShow News
Chromosome shenanigans have resulted in some unexpected hybrid fishes. Also, this record-breaking mouse lives at a ridiculous altitude.
SciShow
The Evolution of Male Homosexuality
Hank goes from space to sex and then to motherhood, covering the SpaceX launch, a mission to the moons of Jupiter, intersexual workplace rivalries, the evolution of male homosexuality, the fossil evidence of squishy baby skulls, toddler...
TED Talks
TED: Progress is not a zero-sum game | Robert Wright
Author Robert Wright explains "non-zero-sumness" -- the network of linked fortunes and cooperation that has guided our evolution to this point -- and how we can use it to help save humanity today.
SciShow
How Tongues Helped Vertebrates Conquer Land
You might not think much of your tongue, but without it, we may have never conquered dry land and the world as we know it.
SciShow
4 Ways Humans Are Still Evolving
When we think about evolution, we typically think about big changes that happened long ago, but we humans are still evolving!
SciShow
Music in Your DNA and A New Species of Human?
Is musical ability genetic? And were there more species of ancient humans than we once thought? SciShow News investigates!
SciShow
Solving the Mystery of Darwin’s Lifelong Illness
Charles Darwin had a great mind, but a not-so great body. Scientists have spent years trying to uncover the mysteries of his poor health.
TED-Ed
TED-Ed: Why do humans have a third eyelid? | Dorsa Amir
You know that little pink thing nestled in the corner of your eye? It's actually the remnant of a third eyelid. In humans, it's vestigial, meaning it no longer serves its original purpose. There are several other vestigial structures in...
Crash Course
The Sun & The Earth Crash Course Big History 3
In which John Green, Hank Green, and Emily Graslie teach you about our Sun, and the formation of the planets. We're going to focus on the formation and development of the Earth, because that's where people live. You'll learn about the...
TED-Ed
TED-Ed: No one can figure out how eels have sex | Lucy Cooke
From Ancient Greece to the 20th century, Aristotle, Freud, and numerous other scholars were all looking for the same thing: eel testicles. Freshwater eels could be found in rivers across Europe, but no one had ever seen them mate and no...
SciShow
Curious Orangutans and 4 Other Animals a Bit Different in Captivity
Surround a wild animal with humans, and there are bound to be some changes. Here are five animals that show differences in captivity.
SciShow
Cephalopods Have a Totally Wild Way of Adapting
With their squishy bodies and color-changing abilities, octopuses and other cephalopods already look like our planet’s resident aliens. But researchers have discovered yet another thing that separates them from most other animals on Earth!
SciShow
5 Things Humans Got Really Wrong About Our Bodies
Throughout history, people have been trying to figure out how our bodies work and how to fix them when things go wrong. This has led to some ideas that, with the benefit of hindsight, seem very strange
TED-Ed
TED-Ed: The most colorful gemstones on Earth | Jeff Dekofsky
In November 1986, Australian miners climbed Lunatic Hill and bored 20 meters into the Earth. They were rewarded with a fist-sized, record breaking gemstone, which they named the Hailey's Comet opal. Thanks to a characteristic called...
Crash Course
2001 - A Space Odyssey: Crash Course Film Criticism
Well, here we are. It's the final episode of Crash Course Film Criticism and we're going to chat about one of the more polarizing films ever made: Stanley Kubrick's 2001: A Space Odyssey. On the surface, 2001 tells the story of human...
SciShow
Hare Hair & Fuzzy Bunnies | SciShow Talk Show
Dr. Scott Mills joins Hank to talk about studying color changing fur and evolutionary conservation. Scott and graduate student Lindsey Barnard bring a snowshoe hare and Jessi from Animal Wonders brings two Netherland Dwarf rabbits.
TED Talks
Roger Hanlon: The amazing brains and morphing skin of octopuses and other cephalopods
Octopus, squid and cuttlefish -- collectively known as cephalopods -- have strange, massive, distributed brains. What do they do with all that neural power? Dive into the ocean with marine biologist Roger Hanlon, who shares astonishing...
Be Smart
Why Do You Love Your Family?
Why do we love people we're related to? Compared to strangers, why do we feel such a deep sense of connection with our family members? Sure, they're nice to us, we take care of each other, and we often live with them, but there has to be...
TED Talks
Helen Fisher: Why we love, why we cheat
Anthropologist Helen Fisher takes on a tricky topic – love – and explains its evolution, its biochemical foundations and its social importance. She closes with a warning about the potential disaster inherent in antidepressant abuse.