TED Talks
Danny Hillis: Back to the future (of 1994)
From deep in the TED archive, Danny Hillis outlines an intriguing theory of how and why technological change seems to be accelerating, by linking it to the very evolution of life itself. The presentation techniques he uses may look...
SciShow
The Gulf of California's Upside-Down Mirror Pools | Weird Places
For upside-down mirrors, super hot volcanic chimneys, and neon rocks with living microorganisms, look no further than the Guaymas Basin in the Gulf of California.
SciShow
Why Is Sperm Count Dropping?
Sperm count in Western countries has been dropping for over a hundred years, and scientists have some ideas as to what’s behind this swimmer shortage.
SciShow
What Squids and Frogs Taught Us About How Brain Cells Talk
Back in the early days of neuroscience, we didn't study the animals you might expect to learn about how brain cells communicate.
SciShow
Victorian Pseudosciences: Solving Murders with Eyeballs
In the 1800s, Wilhelm Kuhne created an image of a window from the eyes of a rabbit. Was this technology applicable to humans?
SciShow
What Causes Runner's High?
After a good distance of running, you might have felt a sensation of happiness. That is the runner's high and some chemicals in your body cause it.
SciShow
This Fish Bulks Up When Danger is Near
Sometimes the hairs on the back of your neck raise up when you sense that danger might be near, but what if you were also able to bulk yourself up like a muscular balloon to fend off that danger? This fish, it turns out, can do exactly...
Crash Course
Energy & Chemistry: Crash Course Chemistry
Grumpy Professor Hank admits to being wrong about how everything is chemicals. But he now wants you to listen as he blows your mind with a new sweeping statement: everything (yes, really everything this time) is energy. What?! This week,...
SciShow
These Strawberries Aren't Red!
It has been two years since "The Dress" divided the internet. A Japanese psychology professor created the new mind-boggling image that has been making the rounds on the internet. Meanwhile, the new study shows the truth about sex...
SciShow
How Weed Works: THC
Hank explains the science behind the effects of that wackiest of weeds, cannabis sativa - aka marijuana.
SciShow
How to Avoid Corpse-Flavored Water
As organisms decompose their chemical and bacterial components can leach into the surrounding ground and water. The bodies buried in cemeteries are no exception.
Be Smart
The Amazing Science of DUST?
Some of the universe's biggest action is a result of its smallest stuff
SciShow
Why Pandas LOVE Rolling in Horse Manure
If you’re lucky enough to witness a panda applying a ripe layer of horse poop body paint to itself, you might assume it is a similar behavior to a dog frolicking in the stink of a dead animal. But in actuality, these pandas are reducing...
TED Talks
Edith Widder: Glowing life in an underwater world
Some 80 to 90 percent of undersea creatures make light -- and we know very little about how or why. Bioluminescence expert Edith Widder explores this glowing, sparkling, luminous world, sharing glorious images and insight into the unseen...
Crash Course
Precipitation Reactions: Crash Course Chemistry
A lot of ionic compounds dissolve in water, dissociating into individual ions. But when two ions find each other that form an insoluble compound, they suddenly fall out of solution in what's called a precipitation reaction. In this...
Crash Course
The Chemical Mind - Crash Course Psychology
BAHHHHHH! Did I scare you? What exactly happens when we get scared? How does our brain make our body react? Just what are Neurotransmitters? In this episode of Crash Course Psychology, Hank takes us to the simplest part of the complex...
SciShow
Animals That Do Drugs
Turns out humans aren't the only animals that can medicate themselves - many other animals have found ways to deal with illness by using natural remedies. Hank will tell you about some of the most interesting methods animals have found...
SciShow
How a Carnivorous Snail Is Advancing Medicine
Cone snails are venomous marine snails who use their venom in creative ways to take down their prey. And scientists have realized that certain chemicals in these venoms could actually be pretty useful for medicine.
SciShow
The Science of Tear Gas
There’s a lot of confusion about tear gases—what they are, what they do, and whether they can cause long-term harm. Here's what we know.
SciShow
10 Surprising Chemicals Your Body Makes
Everything is made of chemicals, including the human body, but there are some especially weird ones
Amoeba Sisters
Biomagnification and the Trouble with Toxins
Explore biomagnification which can happen when toxins become more highly concentrated when moving up through trophic levels in the food chain. Uncontrolled use of DDT is used in video as an example. Learn why bioaccumulation can occur in...
SciShow
Motor Proteins: Tiny Pirates in Your Cells
To some they look like bow-legged cowboys. To others, swaggering pirates. Either way, the two-legged molecules known as motor proteins are what get the job of living done in most of your cells.
SciShow
Motor Proteins Tiny Pirates in Your Cells
To some they look like bow-legged cowboys. To others, swaggering pirates. Either way, the two-legged molecules known as motor proteins are what get the job of living done in most of your cells.
SciShow Kids
Why Do Mosquito Bites Itch?
Why are mosquito bites so itchy? Stop scratching while Jessi explains!