SciShow
How Pregnancy Is Like Growing an Alien Inside You
Pregnancy is quite a feat. The embryo manages to develop, get food, and get rid of their waste, all while staying under the radar of their parent’s immune system.
SciShow
Why Does Spicy Taste 'Hot' and Minty Taste 'Cool'?
A Quick Question answer that explains the chemistry that makes minty things taste “cool” and spicy things taste “hot”.
SciShow
The Really Important Reason Your Lungs Have Taste Receptors
Scientists believe that your taste receptors are meant for taste, but how do they explain the taste receptors on your lungs?
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...
TED-Ed
TED-Ed: How CRISPR lets you edit DNA - Andrea M. Henle
Explore the science of the groundbreaking technology for editing genes, called CRISPR- Cas9, and how the tool could be used to cure diseases. -- From the smallest single-celled organism to the largest creatures on Earth, every living...
SciShow
Biofilm: A New (Gross) Thing to Worry About
Slime can be great, but when it's the wrong kind of slime (you know, the kind that can kill you?), it gets added to the list of things Hank wishes he didn't have to worry about. Scientists call it biofilm, and it's a type of bacterial...
SciShow
Why Do You Always Have Room for Dessert?
No matter how full you are, it seems you can find room for dessert. It’s not your imagination, and once you understand why, you’ll see how you can use this weird quirk of your appetite to your advantage!
Crash Course
DNA, Hot Pockets, & The Longest Word Ever: Crash Course Biology
Hank imagines himself breaking into the Hot Pockets factory to steal their secret recipes and instruction manuals in order to help us understand how the processes known as DNA transcription and translation allow our cells to build proteins.
Amoeba Sisters
The Cell Cycle (and cancer) [Updated]
Explore the cell cycle with the Amoeba Sisters and an important example of when it is not controlled: cancer. Table of Contents: 00:00 Intro 1:00 Cell Growth and Cell Reproduction 1:42 Cancer (explaining uncontrolled cell growth) 3:27...
Bozeman Science
What are Chromosomes?
In this video Paul Andersen answers this question about chromosomes. He explains how the base pairs of DNA form genes which are organized into the chromosomes of the overall genome.
SciShow
The Only Animal That Can't Breathe Oxygen
Oxygen is so essential for animals that every multicellular species we’ve ever studied has the ability to use oxygen to create energy... except one.
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!
SciShow
What Happens When You Stop Eating?
You know what starvation is, but do you know what it does to you? Hank walks you through the three major metabolic phases of starvation, from burning sugars to, basically, self-cannibalism.
Crash Course
Digestive System, part 3: Crash Course A&P
Nachos are great...if you are among the lucky ones whose body can digest them. When digestion goes according to plan, the small intestine performs most of your chemical digestion in the duodenum, while accessory organs including the...
SciShow
Why Are Flamingos Pink?
What makes flamingos go from grey to pink? And can the same thing happen in humans? Quick Questions explains!
Crash Course
ATP & Respiration: Crash Course Biology
In which Hank does some push ups for science and describes the "economy" of cellular respiration and the various processes whereby our bodies create energy in the form of ATP.
Amoeba Sisters
Enzymes (Updated)
The Amoeba Sisters explain enzymes and how they interact with their substrates. Vocabulary covered includes active site, induced fit, coenzyme, and cofactor. Also the importance of ideal pH and temperatures for enzymes are discussed.
SciShow
How Do Seedless Watermelons Reproduce?
Seedless watermelons are basically the best thing ever. But they’re also a delicious paradox. Seeds are a key part of plant reproduction. So how do you breed a plant that doesn’t make any seeds?
SciShow
9 of the Weirdest Sperm Adaptations
You probably have a vague idea of what sperm does, but not all sperm are created equal, and some have even developed unique adaptations to get where they're going.
SciShow
Squid Proteins, but Make Them Fashion
Humans often take inspiration from nature when coming up with inventions, and this includes breakthroughs in fabric design that help to forward the fabulous and functional world of fashion.
SciShow
All About Allergies
What are allergies? How are they caused, and what can people do to prevent them? SciShow explains!
SciShow
The 1918 Pandemic: The Deadliest Flu in History
The science behind why the 1918 flu is “the mother of all pandemics” continues to challenge scientists today. Olivia sheds some light on why this flu was so powerful and what we learned from it.
MinuteEarth
The Hidden Side Of Proteins
You might already know that proteins are a fundamental part of your diet, but they're much more than that.
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 in...