Crash Course Kids
A Case of 'What-Ifs'
Variables: What are they? In the case of engineering, variables are a condition or value that can change. Sometimes we control a variable, sometimes we don't. In this episode of Crash Course Kids, Sabrina chats to us about how variables...
Amoeba Sisters
Incomplete Dominance, Codominance, Polygenic Traits, and Epistasis!
Discover more types of non-Mendelian inheritance such as incomplete dominance and codominance with the Amoeba Sisters!
Amoeba Sisters
Monohybrids and the Punnett Square Guinea Pigs
Learn how to use a Punnett square to solve a Mendelian monohybrid cross with one of the Amoeba Sister's favorite classroom pets: hairless guinea pigs.
Amoeba Sisters
Dihybrid and Two-Trait Crosses
This video will show how to set up and solve everyone's favorite 16 square Punnett square.
3Blue1Brown
Cross products: Essence of Linear Algebra - Part 10 of 15
The cross product is a way to multiple to vectors in 3d. This video shows how to visualize what it means.
TED Talks
Ella Al-Shamahi: The fascinating (and dangerous) places scientists aren't exploring
We're not doing frontline exploratory science in a huge portion of the world -- the places governments deem too hostile or disputed. What might we be missing because we're not looking? In this fearless, unexpectedly funny talk,...
Crash Course Kids
Defining a Problem
So, how do engineers even figure out what problem needs to get fixed? And what's the difference between identifying a problem and just complaining about something. In this episode of Crash Course Kids, Sabrina talks about how we can all...
TED-Ed
TED-Ed: The contributions of female explorers - Courtney Stephens
During the Victorian Age, women were unlikely to become great explorers, but a few intelligent, gritty and brave women made major contributions to the study of previously little-understood territory. Courtney Stephens examines three...
TED-Ed
TED-ED: Cell membranes are way more complicated than you think - Nazzy Pakpour
Cell membranes are structures of contradictions. These oily films are hundreds of times thinner than a strand of spider silk, yet strong enough to protect the delicate contents of life: the cell's watery cytoplasm, genetic material,...
TED-Ed
TED-ED: Buffalo buffalo buffalo: One-word sentences and how they work - Emma Bryce
Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo' is a grammatically correct sentence. How? Emma Bryce explains how this and other one-word sentences illustrate some lexical ambiguities that can turn ordinary words and...
SciShow
8 Incredible Record-Breaking Bridges
All across the world people need to get from one place to another. And sometimes to get to that other place we need bridges. Here are eight bridges that are extraordinary in their own way, from standing the test of time to handling...
Crash Course Kids
Got Some Solutions?
So, there might not be just one solution to a problem. I know that may sound weird, but it's true. So, how do you come up with multiple solutions? In this episode of Crash Course Kids, Engineer Sabrina shows us how to do that.
SciShow
Does Stretching Before Exercise Actually Help?
It seems like a good idea to stretch before exercising, but does it actually prevent injuries, or improve your performance?
Bozeman Science
Hardy-Weinberg Punnett Square
In this video Paul Andersen explains how you can combine the power of a Punnett square for an entire gene pool. Hardy-Weinberg equilibrium will remains constant under several constrains and the probability square makes the information...
TED-Ed
TED-Ed: Why is meningitis so dangerous? - Melvin Sanicas
In 1987, thousands of people gathered in Saudi Arabia for the annual Hajj pilgrimage. But what started out as a celebration led to a worldwide health crisis: more than 2,000 cases of meningitis broke out, spreading across Saudi Arabia...
Crash Course
Symbols, Values & Norms: Crash Course Sociology
What exactly is culture? This week we’re going to try to answer that, and explain the difference between material and non-material culture. We’ll look at three things that make up culture: symbols, values and beliefs, and norms. We’ll...
TED-Ed
TED-Ed: Can you solve the bridge riddle? - Alex Gendler
Taking that internship in a remote mountain lab might not have been the best idea. Pulling that lever with the skull symbol just to see what it did probably wasn't so smart either. But now is not the time for regrets because you need to...
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...
SciShow
Your Bones Do More Than You Think
Bones, you probably have them and they're for more than holding your body upright.
Bozeman Science
Genetic Recombination and Gene Mapping
In this video Paul Andersen explains how the frequency of recombination between linked genes can be used to determine the relative location of genes on a chromosome. Thomas Hunt Morgan and Alfred Strutevant used the fruit fly to develop...
Bozeman Science
Probability in Genetics: Multiplication and Addition Rules
Paul Andersen shows you how to use the rules of multiplication and addition to correctly solve genetics problems. The rule of multiplication can be applied to independent events in sequence. The rule of addition can be applied to...
TED-Ed
TED-ED: How the K_nigsberg bridge problem changed mathematics - Dan Van der Vieren
You'd have a hard time finding the medieval city K_nigsberg on any modern maps, but one particular quirk in its geography has made it one of the most famous cities in mathematics. Dan Van der Vieren explains how grappling with...
SciShow Kids
Grow Your Own Plants!
Plants are all around you! You walk on them, eat them, and even climb them! And guess what? You can even grow your very own!