Crash Course
Population Ecology: How We Saved the Bald Eagle: Crash Course Biology #7
When the Bald Eagle population started to decline in the mid-20th century, scientists began to ask why. Population ecology, the study of organisms of the same species, played a big role in answering that question. In this episode of...
Crash Course
Community Ecology: Interspecies Interactions: Crash Course Biology #6
Community ecology is the study of interactions between different species of living things, and lets ecologists examine the effects of predator-prey relationships, parasites, and mutually beneficial interactions. In this episode of Crash...
Crash Course
Intro to Ecology: Why Did All These Elephants Die?: Crash Course Biology #5
Ecology is the study of the interactions of living things with each other and their environment. It’s a field that not only lets us explore the interconnections between living things, but also how our environment affects us, and how we...
Crash Course
Human Evolution: We Didn't Evolve From Chimps: Crash Course Biology #19
What’s a human? And how did we become humans, anyway? In this episode of Crash Course Biology, we’ll meet some of our closest relatives and trace how we evolved into the brainy, inventive, complex species we are today.
Crash Course
Biological Diversity, Butts, and the Tree of Life: Crash Course Biology #18
Everywhere you look on Earth, you’ll find wonderful and diverse living things, from tiny tardigrades to soaring sequoias. And incredibly, everything alive today, and everything that’s ever lived, is related. In this episode of Crash...
SciShow
Do Animals Mourn Their Dead?
We can't know if or how animals understand death, but behavioral changes in some species could mean they experience something similar to human grief.
TED-Ed
The history of the world according to rats | Max G. Levy
Today, rats are often regarded as the most successful invasive species in the world. The most common species of rat scurried onto the scene roughly 1 to 3 million years ago in Asia. There, they craftily survived Earth’s most recent ice...
TED-Ed
This is the most common way to get head lice | Nazzy Pakpour
For as long as humans have had lice, we’ve fought hard to get rid of them. Nit combs, the fine-tooth brushes used to remove lice and their sticky eggs, have been found among the ancient remains of cultures across the globe. Today it’s...
TED-Ed
Yes, tiny mites live on your face — but is that a bad thing? | M. Alejandra Perotti
Two species of Demodex mites specifically inhabit human follicles. And not just some people’s— nearly everyone is thought to host mites. One person’s face might harbor hundreds or even thousands of individual mites. On any given day,...
MinuteEarth
Why is the Number of Languages Increasing?
Lots of languages and species are going extinct, but because others keep getting found or described, the official counts of languages and species are still increasing.
MinuteEarth
Why Do Butterflies Bother Being Caterpillars?
It seems wild that some animals basically trade in their bodies for new ones during their lifetime, but it's actually really common – and it makes a lot of sense.
MinuteEarth
Why Did It Take Us So Long?
We've long known that animal pollination is an important way plants reproduce on land, but we're only just finding out animals also pollinate plants underwater.
MinuteEarth
The Species That Broke Evolution?
The ancestors of gars, horseshoe crabs and coelacanths looked almost the same as their modern relatives. Darwin called species like these “living fossils'' because they seem like they are evolutionarily frozen in time. But Darwin was wrong.
TED Talks
Compassion and Crisis: A Conversation on Humanity, Climate, and Change
Amir Nizar Zuabi and Kristine McDivitt Tompkins discuss their shared concerns about humanity's lack of compassion and the interconnected crises of climate change, social injustice, and species extinction. Zuabi reflects on storytelling...
TED-Ed
TED-Ed: This mushroom will kill you before you know what’s happening | Michael Beug
Humans have known about the toxicity of death cap mushrooms for millennia. Yet they continue to pose a significant threat to unsuspecting foragers and mushroom hunters throughout the world. Today, death caps are responsible for more than...
MinuteEarth
How Many Mass Extinctions Have There Been?
Want to learn more about the topic in this week's video? Here are some keywords/phrases to get your googling started: - Mass Extinction Event: a significant, global decrease in the diversity of life - "Big 5": The five biggest mass...
SciShow
10 Discoveries Made in National Parks
You might think of national parks as a nice place to see a geyser, or a big ol’ canyon, but over the past 100 years, US national parks have produced some of the biggest, oldest, deepest, and creepiest discoveries that have been made in...
MinutePhysics
Black Holes, Neutron Stars, and White Dwarfs (Collab. w/ MinuteEarth)
This video is about the differences between the corpses or final degenerate dense star forms that dead stars take: black holes, neutron stars, and white dwarfs. The main distinguishing features between them are the mass cutoffs...
MinutePhysics
A Brief History of Everything, feat. Neil deGrasse Tyson
In this captivating video narrated by astrophysicist Neil deGrasse Tyson, viewers are taken on a journey through the history of the universe, from its explosive beginnings to the evolution of life on Earth. Through a mix of science and...