Hank describes to us some news stories that illustrate how science is continually changing the things we think we "know" - from the status of various animals species, to the way our senses work and even where the Moon came from -...

What does a ginkgo tree have in common with a dinosaur?

During autumn in the northeastern US, deciduous trees sport a stunning display of yellows, oranges, and reds. But in some places, like Europe, autumn tends to look much more yellow. So why is it that only certain parts of the world get...

Chimpanzees in Gabon have been observed using bugs as a possible antiseptic, but what's more surprising is that they're applying this remedy to one another in what may be a form of chimpanzee health care.

Both North and South America have their own species of marsupial, the opossum, but how they got so far away from their Australian relatives is a bit of a mystery.

The Socotra archipelago in the Arabian Sea supports so many diverse and unique species that it has been described as the most alien place on Earth. Hank takes you on a tour of this weird place in this episode of SciShow.

Everybody loves dinosaurs, and we wouldn't know nearly as much as we do if it weren't for a person named Mary Anning.

Natural history is full of living things that were long thought to have gone extinct only to show up again, alive and well. Paleontologists have a word for these kinds of organisms: They call them Lazarus taxa.

Who needs redundancy? Well, everyone, it turns out.

Humans are pretty good at destroying things. Like habitats, animal populations... you catch my drift. But, there have been a few species that humans have helped bring back from the brink of extinction. Chapters 0:00 0:05 0:11 0:17 0:23 0:29

Find out about the last time and the next time the Earth will be hit by a Gamma-ray Burst.

This time, we're the asteroid

Would you like to spend all day thinking about dinosaurs? Well, some scientists do! Find out all about what it means to be a paleontologist!

Have you ever heard of the Peppered Moth? It's a great example of how living things can change because their environment has changed. And it's not just them! There used to be giant insects roaming the world, but they got smaller through...

Dino's back to share more dinosaur facts with you, and this time he has some incredible news: birds are the descendants of dinosaurs! Join him to learn the whole story!

In this video Paul Andersen explains how biodiversity measures the variety of genes, species, and ecosystems on the planet. Biodiversity provides resources and ecosystem services for humans on the planet. He also explains how...

Hank gets real with us in a discussion of evolution - it's a thing, not a debate. Gene distribution changes over time, across successive generations, to give rise to diversity at every level of biological organization.

Our image of dinosaurs has been constantly changing since naturalists started studying them about 350 years ago. Taken together, these pictures can tell us a whole lot about just how much we have learned. Let's explore the history of...

From a special black-footed ferret to coral that can withstand warming waters, genetic rescue efforts that use genomics and synthetic biology are helping nature thrive. But despite the huge successes of this kind of intervention,...

Learn about asteroids, meteors, and comets and how they can affect earth!

Tropical rainforests are known for being super biologically diverse _ they're full of different species, from colorful birds and insects to plants and fungi. We haven't even come close to cataloguing everything that's there.

Hank gets into the dirty details about vascular plant reproduction: they use the basic alternation of generations developed by nonvascular plants 470 million years ago, but they've tricked it out so that it works a whole lot differently...

New ReviewWelcome back to the second episode of our new format for Bizarre Beasts, which we're calling Season Zero. Over the next year, we will be remastering episodes of Bizarre Beasts that were originally created for Vlogbrothers.

New ReviewWelcome back to Bizarre Beasts: Season Zero, where we are remastering episodes of Bizarre Beasts that were originally created for Vlogbrothers. This episode is all an extinct flightless bird from the New Zealand island of Takapourewa....