SciShow
Weird Places Blood Falls
In our continuing series on Earth's weirdest places, Hank describes the crazy place in Antarctica known as Blood Falls in all its scientifically strange majesty.
SciShow
Weird Places: The Jacuzzi of Despair
There's a lake so deadly that anything that goes for a swim gets pickled. Yet there's a thriving ecosystem literally living on the edge, which might give astrobiologists a hint at how life could thrive on other worlds.
TED-Ed
TED-ED: Why isn't the world covered in poop? - Eleanor Slade and Paul Manning
Each day, the animal kingdom produces roughly enough poop to match the volume of water pouring over Victoria Falls. So why isn't the planet covered in the stuff? You can thank the humble dung beetle for eating up the excess. Eleanor...
TED-Ed
TED-Ed: The beneficial bacteria that make delicious food - Erez Garty
Where does bread get its fluffiness? Swiss cheese its holes? And what makes vinegar so sour? These foods may taste completely different, but all of these phenomena come from microorganisms chowing down on sugar and belching up some...
PBS
From the Cambrian Explosion to the Great Dying
The first era of our current eon, the Paleozoic Era, is probably the most deceptively fascinating time in Earth's history. With near constant revolutions in life, punctuated by catastrophic extinctions, it is also one of the most chaotic.
Crash Course
How To Speak Chemistrian: Crash Course Chemistry
Learning to talk about chemistry can be like learning a foreign language, but Hank is here to help with some straightforward and simple rules to help you learn to speak Chemistrian like a native. Table of Contents Determining Formulas...
Crash Course Kids
Who Needs Dirt?
So... do plants need dirt? The truth might shock you. In this episode of Crash Course kids, Sabrina talks about how plants get energy and how that energy is transported around them. Also, she talks about dirt.
SciShow Kids
How to Feel Your Heart Beat
Get to know your body’s most important muscle -- your heart -- and learn how to take your own pulse!
TED-Ed
TED-ED: How we think complex cells evolved - Adam Jacobson
Imagine you swallowed a small bird and suddenly gained the ability to fly - or you ate a cobra and were able to spit poisonous venom! Well, throughout the history of life (and specifically during the evolution of complex eukaryotic...
Bozeman Science
Plant Nutrition and Transport
Paul Andersen explains how nutrients and water are transported in plants. He begins with a brief discussion of what nutrients are required by plants and where they get them. He shows you dermal, vascular and ground tissue in monocot...
SciShow
What's It Like at the Edge of the Solar System
Where does our solar system end, and interstellar space begin, and what is it like there? Satellites and probes like IBEX and Voyager 1 & 2 help us get a better look at our special corner of the galaxy.
Crash Course
The Creation of Chemistry - The Fundamental Laws: Crash Course Chemistry
Today's Crash Course Chemistry takes a historical perspective on the creation of the science, which didn't really exist until a super-smart, super-wealthy Frenchman put the puzzle pieces together - Hank tells the story of how we went...
TED-Ed
TED-ED: The law of conservation of mass - Todd Ramsey
Everything in our universe has mass - from the smallest atom to the largest star. But the amount of mass has remained constant throughout existence even during the birth and death of stars, planets and you. How can the universe grow...
SciShow
A History of Earth's Climate
Earth had a climate long before we showed up and started noticing it and it's influenced by a whole series of cycles that have been churning along for hundreds of millions of years. In most cases those cycles will continue long after...
TED-Ed
What's in the air you breathe? | Amy Hrdina and Jesse Kroll
Take a deep breath. In a single intake of air, your lungs swell with roughly 25 sextillion molecules, ranging from days-old compounds, to those formed billions of years in the past. In fact, many of the molecules you're breathing were...
Crash Course
Pollution: Crash Course Ecology
Hank talks about the last major way humans are impacting the environment in this penultimate episode of Crash Course Ecology. Pollution takes many forms - from the simplest piece of litter to the more complex endocrine distruptors - and...
Crash Course
The Global Carbon Cycle - Crash Course Chemistry
In this final episode of Crash Course Chemistry, Hank takes us on a tour of the The Global Carbon Cycle and how it all works. From Carbon Fixation to Redox Reactions, it's all contained within! -- Table of Contents The Carbon Cycle 0:51...
Bozeman Science
Homeostatic Evolution
Paul Andersen shows how homeostasis reflects of evolution through time. The endocrine system shows continuity through flatworms, earthworms and vertebrates. However the respiratory system shows change as organisms move onto land. The...
SciShow
Let's Nuke Mars!
Elon Musk thinks that we can make Mars habitable by nuking it. But would that really work?
TED Talks
Seyi Oyesola: A hospital tour in Nigeria
Dr. Seyi Oyesola takes a searing look at health care in underdeveloped countries. His photo tour of a Nigerian teaching hospital -- all low-tech hacks and donated supplies -- drives home the challenge of doing basic health care there.
SciShow
Mars Cities and Moon Bases: SpaceX's Big New Plans
SpaceX CEO Elon Musk announced some ambitious plans at the International Aeronautical Congress. If he's right, we could have humans living on the moon and Mars within a decade, and you might never have an 18 hour flight again!
TED-Ed
TED-Ed: What yoga does to your body and brain | Krishna Sudhir
There are many different approaches to modern yoga— though most forms have three core elements: physical postures, breathing exercises, and spiritual contemplation.This blend of physical and mental exercise is widely believed to have a...
Bozeman Science
A Beginner's Guide to Balancing Equations
Mr. Andersen explains the basics of balancing chemical equations. A visual guide shows you how to change coefficients to balance the atoms in reactants and products.