TED-Ed
TED-ED: Why are we so attached to our things? - Christian Jarrett
After witnessing the _violent rage" shown by babies whenever deprived of an item they considered their own, Jean Piaget _ a founding father of child psychology _ observed something profound about human nature: Our sense of ownership...
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.
SciShow
A Blood Test for Cancer
Since many cancers don’t have symptoms early on, they may go unnoticed until they are at an advanced stage. But that is changing, thanks to a newer, non-invasive tool.
SciShow
Intersex Across the Animal Kingdom
Do you think animals can be divided into two biological sexes: female and male? Well, it's way more complicated that that!_
TED Talks
TED: Could fish social networks help us save coral reefs? | Mike Gil
Mike Gil spies on fish: using novel multi-camera systems and computer vision technology, the TED Fellow and his colleagues explore how coral reef fish behave, socialize and affect their ecosystems. Learn more about how fish of different...
Bozeman Science
Meselson-Stahl Experiment
Paul Andersen explains how the Meselson-Stahl experiment was used to prove that DNA copied itself through a semi-conservative process. They grew E. coli in a medium containing heavy nitrogen (N-15). They then added the E. coli to a...
SciShow
Why Ferns Have More Chromosomes Than You
Chromosomes are fascinating little things, and today, Hank explains why more of them doesn't mean more complex, and why different organisms have different numbers of chromosomes. The short answer: mistakes happen.
TED-Ed
TED-ED: Secrets of the X chromosome - Robin Ball
The sequence of DNA that we inherit from our parents encodes directions for making our cells and giving us specific traits. Identical twins have the same DNA sequence, so how can one twin end up with a genetic disorder while the other...
Be Smart
Is Height All in Our Genes?
I'm tall. Most of the people in my family are tall. Does that mean my son will be tall? Turns out the inheritance of height is a lot more complicated than we thought. Scientists know that nature (genes) and nurture (environment) both...
SciShow
Why Do Strawberries Have Eight Copies of Their Genes
Strawberries are delicious, but for a molecular biologist, they're also very difficult.
TED Talks
TED: The era of personal DNA testing is here | Sebastian Kraves
From improving vaccines to modifying crops to solving crimes, DNA technology has transformed our world. Now, for the first time in history, anyone can experiment with DNA at home, in their kitchen, using a device smaller than a shoebox....
Bozeman Science
Cell Division
Paul Andersen explains how cells duplicate through the process of cell division. Prokaryotic cells (like bacteria) duplicate through a process of binary fission. Eukaryotic cells (like you) duplicate body cells through mitosis and create...
PBS
Should "Happy Birthday" be Protected by Copyright?
Did you know the rights to "Happy Birthday" are still privately held today? Copyright was originally created for two reasons: to protect the original creators so they could benefit from their work AND have creative works enter the Public...
Be Smart
Are We All Related?
In part 3 of our special series on human ancestry, we investigate how closely related we all really are. Basic math tells us that all humans share ancestors. But you'll be amazed at how recently those shared ancestors lived. Thanks to...
TED-Ed
TED-Ed: The controversial origins of the Encyclopedia - Addison Anderson
The first encyclopedia contained 70,000 entries and over 20,000,000 words. It was broken into 35 volumes written over the course of 3 decades. It was also banned by Louis XV and Pope Clement XIII. But why was this encyclopedia so...
SciShow
Colorfully Camouflaging Cuttlefish Are Colorblind
Colorfully Camouflaging Cuttlefish Are Colorblind
SciShow Kids
Birds that Talk!
Birds can communicate with each other in lots of ways, but some types of birds can learn human words! But just because they learn human words, does that mean that they can understand them?
Bozeman Science
Viruses
Paul Andersen describes the important characteristics of viruses. He starts with a brief description of origin theories. He then describes the two characteristics of all viruses; genetic information and protein coats. He also describes...
SciShow
How Do Chips Make Credit Cards More Secure?
If you live in the United States, you might have recently gotten a credit card with a microchip on it. But what does this chip do that makes it any different than the magnetic strip on the back of the card?
Bozeman Science
Advanced Genetics
Paul Andersen explains important concepts that can not be explained by simple Mendelian genetics. He begins with a discussion of polygenic inheritance and uses a simulation on height to show how a bell shape curve of phenotypes is...
TED-Ed
TED-Ed: What really happened to the Library of Alexandria? - Elizabeth Cox
2,300 years ago, the rulers of Alexandria set out to fulfill a very audacious goal: to collect all the knowledge in the world under one roof. In its prime, the Library of Alexandria housed an unprecedented number of scrolls and attracted...
SciShow
Having Six Fingers Is a Dominant Trait
Genetics are extremely complicated—so complicated that having an extra finger or toe, for example, is exceedingly rare despite it being caused by a dominant gene.
SciShow
Why We Haven't Cured Cancer
Ever wonder why we still haven't cured cancer? Join SciShow as we discuss what's wrong with that question and why it's so hard to find a cure.
Crash Course
DNA Structure and Replication: Crash Course Biology
Hank introduces us to that wondrous molecule deoxyribonucleic acid - also known as DNA - and explains how it replicates itself in our cells.