SciShow
Why Do Razor Blades Dull so Quickly?
If you shave regularly, you may have noticed your razor blades don’t cut as well after just a few uses. But why do razors get dull so quickly?
Bozeman Science
Biogeochemical Cycling
Paul Andersen explains how biogeochemical cycling is used to move nutrients from the environment into living material and back again. He explains the water cycle, the carbon cycle, the nitrogen cycle and the phosphorus cycle. He also...
TED Talks
TED: Hopeful lessons from the battle to save rainforests | Tasso Azevedo
Save the rainforest is an environmental slogan as old as time — but Tasso Azevedo catches us up on how the fight is actually going these days. Spurred by the jaw-dropping losses of the 1990s, new laws (and transparent data) are helping...
SciShow
Where Does the Candle Wax Go?
While not used much any more as a primary source of light, candles are still everywhere, from an aroma in a bathroom to a mood during dinner. That is, until they’re gone.
TED Talks
TED: Why healthy soil matters now more than ever | Jane Zelikova
From nourishing our foods to storing massive amounts of carbon, soil is teeming with diverse microbial life that could slow global warming. Climate change scientist Jane Zelikova calls for agricultural practices that protect Earth's soil...
Bozeman Science
Reversible Reactions
In this video Paul Andersen describes how reversible reactions achieve equilibrium as reactants are converted to products and products are converted to reactants. A model shows how forward reaction rates and reverse reactions rates...
SciShow
Could Humans Ever Breathe Water?
Wouldn’t it be wonderful if we could breathe underwater? But is it even possible?
SciShow
Zombie Fires Are on the Rise
Fire seasons can be bad enough on their own, but it turns out sometimes forest fires that appeared to be dead, turn out to have just been lying in wait.
Crash Course
More Organic Nomenclature Heteroatom Functional Groups - Crash Course Organic Chemistry
Oxygen is pretty dang amazing! Some of the most intensely studied functional groups in organic chemistry have oxygen atoms. In this episode of Crash Course Organic Chemistry, we're building on the last episode's discussion of...
SciShow
The Carbon Impact of the World’s Largest Mass Migration
The Carbon Impact of the World’s Largest Mass Migration
SciShow
Silicon-Based Life: Could Living Rocks Exist?
It's possible life could form based on elements other than carbon, but they would look much different than the life we are used to.
PBS
The Search for the Earliest Life
More than 4 billion years ago, the crust of the Earth was still cooling and the oceans were only beginning to form. But in recent years, we've started to discover that, even in this hellish environment, life found a way.
SciShow
3 Brand New Colors That Scientists Discovered
For millennia, we mostly had to make do with natural pigments and dyes, but in the last 300 years or so, chemical synthesis has revolutionized the colors of our world.
TED Talks
TED: How we could make carbon-negative concrete | Tom Schuler
Concrete is all around us: we use it to build our roads, buildings, bridges and much more. Yet over the last 2,000 years, the art of mixing cement and using it to bind concrete hasn't changed very much -- and it remains one of the...
SciShow
How Antarctica Froze Over
Antarctica wasn't always covered in kilometer thick ice sheets, in fact, scientists have spent years figuring out what turned this once lush continent into its current icy state.
TED Talks
TED: An interactive map to track (and end) pollution in China | Ma Jun
China has pledged to be carbon neutral by 2060 -- and its citizens are helping industries across the country reach that goal. Environmentalist Ma Jun introduces the Blue Map, an app that empowers people to report pollution violations in...
Crash Course
Biological Molecules - You Are What You Eat: Crash Course Biology
Hank talks about the molecules that make up every living thing - carbohydrates, lipids, and proteins - and how we find them in our environment and in the food that we eat.
SciShow
3 Cosmic Time Capsules
Long before we were around, the universe was preserving clues about the distant past, in everything from little balls of carbon to huge groups of stars.
SciShow
Why Carbon Dating Might Be in Danger
Carbon dating transformed fields like archeology and paleontology, but its use might be in danger.
TED-Ed
TED-Ed: The carbon cycle - Nathaniel Manning
What exactly is the carbon cycle? Nathaniel Manning provides a basic look into the cyclical relationship of carbon, humans and the environment.
SciShow
The Deal with Fat
Dietary science is complicated-- one day something is good for you and the next it's not. Learn what we DO know about fat chemistry in this episode of SciShow.
TED Talks
TED: A vision of sustainable housing for all of humanity | Vishaan Chakrabarti
By 2100, the UN estimates that the world's population will grow to just over 11 billion people. Architect Vishaan Chakrabarti wants us to start thinking about how we'll house all these people -- and how new construction can fight climate...
SciShow
Where Do Diamonds Come From
Diamonds. You see them in jewelry stores, celebrities flaunting them, but where do they come from? Turns out not from coal! Check out this episode to find out what conditions are needed for diamonds to form.
Bozeman Science
Bond Length and Bond Energy
In this video Paul Andersen explains how the bond length and bond energy are calculated using an energy distance graph. The strength of the bond is determined by the charges in the constituent atoms. As the charge increases the bond...