SciShow
Why Does Hair Get Frizzy When It's Humid?
If your hair gets frizzy when the humidity is high, try not to think of it as a bad hair day—you're really just a human hygrometer!
TED Talks
TED: What to do when everything feels broken | Daniel Alexander Jones
Some call me a soul sonic superstar, says Jomama Jones, the alter ego of TED Fellow and theater artist Daniel Alexander Jones. In this stunning talk and performance, Jomama Jones invites us to consider how coming undone can be the first...
Crash Course
Reaching Breaking Point: Materials, Stresses, & Toughness: Crash Course Engineering #18
Today we’re going to start thinking about materials that are used in engineering. We’ll look at mechanical properties of materials, stress-strain diagrams, elasticity and toughness, and describe other material properties like hardness,...
SciShow
Why Is It So Hard to Make a Decision?
Even when you know what you want to do, sometimes actually doing the thing is hard. Luckily, research suggests a few ways you can make it a little easier.
Bozeman Science
Continuity Equation
In this video Paul Andersen explains how the continuity equation is an application of conservation of matter in a fluid. The continuity equation may apply to either mass or volumetric flow. Example problem and examples are included.
TED Talks
Sharmeen Obaid-Chinoy: How film transforms the way we see the world
Film has the power to change the way we think about ourselves and our culture. Documentarian and TED Fellow Sharmeen Obaid-Chinoy uses it to fight violence against women, turning her camera on the tradition of honor killings in Pakistan....
SciShow
Can You Really Change Your Personality?
Your personality is often treated as an immutable part of who you are, but while changing it is difficult, it’s certainly not impossible.
TED-Ed
TED-Ed: How do your hormones work? - Emma Bryce
Over our lifetimes, our bodies undergo a series of extraordinary metamorphoses: we grow, experience puberty, and many of us reproduce. Behind the scenes, the endocrine system works constantly to orchestrate these changes. Emma Bryce...
TED-Ed
TED-Ed: How puberty changes your brain | Shannon Odell
While we often talk about puberty's effect on the body, what gets overlooked are the fascinating changes that happen in the brain. Puberty, in fact, begins in the brain, and lasts as long as five years. And during this extended process,...
Bozeman Science
Wave Equation
In this video Paul Andersen explains how a sine or cosine wave can describe the position of the wave based on wavelength or wave period. A wave function can the position of a wave as a function or the amplitude and wavelength or the...
SciShow
Why Scientists Dumped a Bunch of Dead Alligators in the Ocean
We still don't know a lot about the deep sea, but thanks to the help of three dead alligators, we know more about the diets of some of the creatures that live there.
Bozeman Science
Beats
In this video Paul Andersen explains how beats are created through interference of waves with similar frequencies. The changes in amplitude are caused by destructive and constructive interference. The frequency of beats is equal to the...
Crash Course
Alkenes & Alkynes - Crash Course Chemistry
Today Hank talks about the deliciousness of alkenes & alkynes, their structures, and how to remember which is which by simply knowing the alphabet. Also, he breaks down hydrogenation, halogenation, polymerization, and triglycerides all...
Crash Course Kids
Part(icles) of Your World
Have you ever heard the phrase, 'You look like a Million Bucks?' Well, you do... but you also look like a million particles. In this episode, Sabrina talks to us about matter and particles and that all matter is made up of particles....
Bozeman Science
Enthalpy of Reaction
In this video Paul Andersen explains how the enthalpy of a reaction can be released in an exothermic or consumed in an endothermic reaction. According to Hess's law if the reaction is reversed the sign of the enthalpy of reaction is also...
Bozeman Science
The Rate of Reactions
In this video Paul Andersen defines the rate of a reaction as the number of reactants that are consumed during a given period of time. The rate of the reaction can be affected by the type of reaction as well as the concentration,...
Crash Course
Ecological Succession: Change is Good - Crash Course Ecology
In the world of ecology, the only constant is change - but change can be good. Today Hank explains ecological succession and how ecological communities change over time to become beautiful, biodiverse mosaics.
TED Talks
Moreangels Mbizah: How community-led conservation can save wildlife
Conservationist and TED Fellow Moreangels Mbizah studied the famous Cecil the lion until he was shot by a trophy hunter in 2015. She wonders how things could've gone differently, asking: "What if the community that lived next to Cecil...
SciShow
Epigenetics
Hank & his clone Circus Hank explain the power of epigenetics, which studies the factors that determine how much or whether some genes are expressed in your body.
Bozeman Science
Graphing Data by Spreadsheet
Paul Andersen shows you how to graph data by hand. He explains the required elements of a scatter plot with a best fit line. He shows you how to properly scale and label the axes.
Bozeman Science
Mutations
Paul Andersen describes the major mutations found in the living world. He starts with an analogy comparing the information in DNA with the information in a recipe. Changes in the DNA can result in changes to the protein, like changes...
SciShow
Everest Doesn’t Always Feel Like the Tallest Mountain
Mount Everest is unquestionably the highest point on earth, but it doesn't always feel that way.
Bozeman Science
Position, Velocity and Acceleration
In this video Paul Andersen explains for the position of an object over time can be used to calculate the velocity and acceleration of the object. If a net force acts on a object it will experience an acceleration.