Who knew that a rainforest could be literal? Hosted by: Rose Bear Don't Walk (she/her)

Animals have all kinds of adaptations to help them get through winter, from hibernation to boots and hats. But trees have to make it through the coldest months of the year alive, too, and they've developed some pretty extreme ways to do it!

Everyone loves bananas. But because banana trees die and grow back every year, researchers want to find ways to recycle all that biomass -- from bioplastic, to solar panels, to skateboards.

Squeaks and Mister Brown learn all about how to use brine to make homemade pickles!

Jessi and Squeaks are making special valentines for all of their friends! And while they’re working they’re watching older videos to help them remember how they can make the best gifts!

Jessi and Squeaks go on a winter scavenger hunt outside, and learn about all kinds of cool winter science - like different types of ice, dormant plants, and special signs of animals you can see in the winter!

Squeaks is feeling nostalgic today, so he and Jessi are revisiting times in the past that he had tons of fun with all his friends at The Fort!

Jessi and Squeaks are eating some pancakes and learning all about their favorite pancake topping: maple syrup! Learn how maple trees use air, water, and sunlight to make sugar for the tree to use as food, called sap, and how humans...

There's all sorts of life in the Redwood forest, but not just in the ground, different animals live in all layers of the Redwoods!

If we want to better understand the environment and combat climate change, we need to look deep underground, where diverse microscopic fungal networks mingle with tree roots to form symbiotic partnerships, says microbiologist Colin...

By 2050, it's estimated that over 65% of the world will be living in cities. We may think of nature as being unconnected to our urban spaces, but trees have always been an essential part of successful cities. Humanity has been uncovering...

Plants make oxygen using photosynthesis, but what happens to the air when those trees drop their leaves in winter?

As a diver in the 1970s, marine ecologist Enric Sala saw once-lush oceanscapes reduced to underwater deserts -- but later, in marine preserves across the globe, he also witnessed the ocean's power to rejuvenate itself when left to its...

In which Mike Rugnetta teaches you about Ma'ui, prominent hero of many cultures in Oceania, aka the Pacific Island nations. Ma'ui is just the kind of hero we're interested in here at Crash Course. He's a culture hero, he's a an...

It's a beautiful day, so Squeaks is going to go on a hike! And he's bringing his trusty field journal so he can take notes on all of the plants and animals he sees along the way!

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 river is the...

How can you tell the difference between a yellowjacket and a hornet? And how much cosmic XP do you need to evolve a wasp into a bee? Follow the insect that stung you, and discover the fascinating world of wasp nests and bee hives.

Business is screwed if we don't fix climate change, says economist Rebecca Henderson. In this bold talk, she describes how unchecked capitalism destabilizes the environment and harms human health -- and makes the case for companies to...

In 2009, a satellite circled Earth, scanning and sorting the wavelengths reflecting off the planet's surface. Researchers noticed something baffling: an unexpected wavelength of unknown origin. They tried looking at Earth with only this...

Bees aren’t the only pollinators out there. Some of the other, more surprising pollinators aren't just unconventional, they give us unique examples of how the relationship between pollinators and plants evolved in the first place.

Invasive species can wreak havoc in their new habitats, and the survival of entire ecosystems can depend on getting rid of them. In some cases, we humans have gotten pretty creative in our attempts to eradicate the problem.

We all share one planet -- we breathe the same air, drink the same water and depend on the same oceans, forests and biodiversity. economist Naoko Ishii is on a mission to protect these shared resources, known as the global commons, that...

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...

What do woolly pigs have to do with climate change? They're part of a vital, ingenious and evolving strategy to take carbon out of the sky and store it safely -- in trees, soils, the ocean, buildings, rocks and deep underground. Every...