How the heck do we map out a planet without oceans? NASA had to figure that out when we sent the Mariner 9 probe to Mars. There's some tricky, yet fascinating science behind all of it! In this episode of Crash Course Physics, Shini talks...

In this video Paul Andersen explains how chemical reactions progress as bonds are broken and reformed reformed. He explains the difference between changes in state and changes in molecules. He discussed collision theory and explains...

In this video Paul Andersen explains how the climate on the earth is affected by the amount of solar radiation and the greenhouse affect. The addition of anthropogenic greenhouse gases has led to global warming which is impacting humans...

In this episode Hank explains how snow is made using science.

Jessi and Squeaks just learned about terrariums, and now they want to make one for themselves! Join them to learn all about these tiny gardens in a bottle and how you can make one of your own!

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...

Traditionally, geography is studied as two interconnected parts: physical geography and human geography. For the first half of this series, we will be focusing on physical geography, which is all about recognizing the characteristics of...

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!

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The water in your faucet may once have been part of a cloud...or a snowflake...or even the ocean! And it’s all because of the water cycle!

In which John Green, Hank Green, and Emily Graslie teach you about our Sun, and the formation of the planets. We're going to focus on the formation and development of the Earth, because that's where people live. You'll learn about the...

If you've ever gone outside really early on a cold day in fall, you might have seen a thin layer of sparkly ice crystals covering everything! That ice is called frost, and it can only form if the weather is exactly right!

Why do ice cubes shrink, ice cream get frosty, and vegetables dry out in the freezer? FREEZER BURN!

New ReviewFrom a solid to a gas! Dry ice!

New ReviewColorful, engaging footage emphasizes the fact that phase changes occur all around us. Freezing, melting, vaporization, and condensation are all explained through crisp imagery and colorful animations. This video correlates to the Next...

What happens to your atoms when you die? About 100 billion people have died since the dawn of humanity. Since the law of conservation of matter says that matter cannot be created or destroyed, all their atoms...

Electric vehicles are not necessarily greener because they create no emissions. We have to take a look at the bigger picture. Source of electricity, depending on the fuel, can produce greenhouse gases. Manufacturing the components of the...

What is Chemistry? What are the states of Matter?? Find out in this video!

Science Kids Hurricanes, Tornadoes, Bomb Cyclones, Atmospheric Rivers, Floods and Extreme Weather

Atmospheric rivers are like rivers in the sky, transporting massive amounts of water vapor from tropical regions to mid latitude...

DIY SCI host Steve Spangler demonstrates the extreme crushing power of air pressure by crushing a steel drum!

As the planet warms, there's more water vapor in the air, which makes storms stronger and causes heavier rain and snow. This extra heat and humidity can also make it dangerous to live in some places, especially at night when bodies can’t...

The Arctic is warming quickly, and this is changing the jet stream—a strong wind high in the sky that affects weather. The jet stream is becoming slower and more wavy, which causes extreme weather to last longer, like very cold winters...

The Tonga eruption in January 2022 was the most powerful volcanic explosion of the 21st century so far, sending ash 36 miles into the sky and creating tsunamis up to 65 feet high. The eruption was so strong that it caused a sonic boom...

Discover how physicist Ken Libbrecht grows snowflakes in the lab, offering insights into their crystal formation and their role in the movie Frozen.<br/>

Describes experimental setups to demonstrate reversible reactions.