Crash Course
The Evolutionary Epic: Crash Course Big History
In which John Green, Hank Green, and Emily Graslie teach you about evolution. So, in the last 3.8 billion years, life on Earth has evolved from single-celled prokaryotes to the dizzying array of life we have today. So how did all this...
TED Talks
TED: How we're growing baby corals to rebuild reefs | Kristen Marhaver
Kristen Marhaver studies corals, tiny creatures the size of a poppyseed that, over hundreds of slow years, create beautiful, life-sustaining ocean structures hundreds of miles long. As she admits, it's easy to get sad about the state of...
SciShow
Atavisms: 4 Lost Traits That Returned
Every once in a while, traits thought to be lost forever suddenly reappear, like a dolphin or a whale born with complete hind limbs! Known as atavisms, these occurrences can teach us all sorts of things, like how limbs actually grow.
PBS
Why Haven't We Found Alien Life?
With millions of Earth like planets around sun like stars in our galaxy alone, why don't we see intelligent alien life? Or any other life for that matter? It gets especially weird when you factor in new scientific revelations that life...
MinuteEarth
The Department of Redundancy Department
Who needs redundancy? Well, everyone, it turns out.
TED Talks
TED: How going to Mars improves life on Earth | Eric Hinterman
Memory foam, air purifiers, scratch-resistant lenses: these are just a few of the everyday items originally developed for space missions. Aerospace engineer Eric Hinterman invites us to dream big and imagine what technological...
SciShow
Xenophyophores: The Strange Life of a Giant Single Cell
You may think of single-celled organisms as being microscopically small, but these ocean dwellers are a little heftier than that.
Be Smart
How Many Species Are There?
How many species are there on Earth? In biology, this is one of a fundamental question that we still don't have a very good answer for. Imagine if chemists didn't know all the elements of the periodic table, or if physicists didn't know...
TED-Ed
TED-ED: How do animals experience pain? - Robyn J. Crook
Humans know the surprising prick of a needle, the searing pain of a stubbed toe, and the throbbing of a toothache. We can identify many types of pain and have multiple ways of treating it - but what about other species? How do the...
SciShow
When Three Species Combine Multi-Species Hybrids
Hybrid organisms are rare, and most end up sterile, like mules. But sometimes, three or more species come together to create multi-species hybrids, and they can and have been really useful.
TED-Ed
TED-Ed: Can you solve the frog riddle? - Derek Abbott
You're stranded in a rainforest, and you've eaten a poisonous mushroom. To save your life, you need an antidote excreted by a certain species of frog. Unfortunately, only the female frog produces the antidote. The male and female look...
SciShow
Why Doesn’t the Palo Verde Tree Need Water?
They don’t call water the building block of life for nothing, most living things need it. The palo verde tree, however, has managed to skate by needing it a lot less than the rest of us.
SciShow
The Most Incredible Octopus You’ve Never Heard of: The Blanket Octopus
All octopuses start out as teeny, tiny plankton, and most grow up to settle down on the seafloor. The blanket octopus, however, never settles down, and spends its life wandering the open ocean.
SciShow
7 Unbelievably Hardcore Ants
The ant world is an incredible, dangerous, and downright bizarre place. Some ants, though, are a lot cooler and more resourceful than you might give them credit for. Chapters SKULL-COLLECTING ANT 0:40 TRAP-JAW ANTS Credit: Johnson...
TED Talks
Nina Jablonski: Skin color is an illusion
Nina Jablonski says that differing skin colors are simply our bodies' adaptation to varied climates and levels of UV exposure. Charles Darwin disagreed with this theory, but she explains, that's because he did not have access to NASA.
SciShow
7 New Species Discovered in Cities
Scientists are discovering new species at the bottom of the ocean and deep in the rainforest, but there are also plenty of new animals being discovered in cities around the world!
TED Talks
TED: Hopeful lessons from the battle to save rainforests | Tasso Azevedo
Save the rainforest is an environmental slogan as old as time — but Tasso Azevedo catches us up on how the fight is actually going these days. Spurred by the jaw-dropping losses of the 1990s, new laws (and transparent data) are helping...
MinuteEarth
The Actual Reason Men Die First
Because females often outlive males, behavior is often blamed - but there is a decent chance our sex chromosomes might be to blame instead.
SciShow
Two Unbelievable New Transplants That Actually Worked
Organ transplants aren’t new, but scientists are still making breakthroughs in transplant success rates and the sources of the organs.
SciShow
6 Ways Species Rely on Humans for Survival
Sometimes, a species has declined so dramatically that they require serious human intervention to ensure they don’t disappear forever. Here are six ways we’re using conservation and science to keep those species alive....
Chapters
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TED Talks
TED: Gene editing can now change an entire species -- forever | Jennifer Kahn
CRISPR gene drives allow scientists to change sequences of DNA and guarantee that the resulting edited genetic trait is inherited by future generations, opening up the possibility of altering entire species forever. More than anything,...
SciShow
6 of the Oldest Parasites Ever Found
Where there's life, there's other life looking for a free ride. Here are six of the world's oldest parasites.
MinuteEarth
MinuteEarth Explains: Battle of the Sexes
In this collection of classic MinuteEarth videos, we take a look at how deep the divide between males and females actually goes.
SciShow
How Do Turtles Live So Long?
We all know turtles live an amazingly long time, but what's their secret? And can we apply it to humans?