SciShow
What Makes Your Ears Ring?
What's happening inside our ears when we can hear that ringing? What's happening inside our brains? Sit back, clean the wax out of your ears, and let Michael Aranda explain!
Be Smart
The Deadliest Flu Season in History?
The flu might feel like some minor illness that you don't need to worry about much, but tens of thousands of people still die from it every year. And back in 1918, Flu killed up to 5% of the world's population. Could a flu that bad...
Bozeman Science
The Respiratory System
Paul Andersen starts this video with a description of the respiratory surface. He explains how worms, insects, fish and mammals take in oxygen and release carbon dioxide. He then tours the major organs of the respiratory system; from the...
TED-Ed
TED-Ed: How do cancer cells behave differently from healthy ones? - George Zaidan
How do cancer cells grow? How does chemotherapy fight cancer (and cause negative side effects)? The answers lie in cell division. George Zaidan explains how rapid cell division is cancer's "strength" -- and also its weakness.
SciShow
Creating $122 Billion of Antibodies | Antibodies Series Part 2
Figuring out how to hack the immune system and make the antibodies we want was just the beginning. Thanks to innovative technologies, we're finding ways to produce safe, effective antibodies for all sorts of uses.
Crash Course
Sensation & Perception - Crash Course Psychology
Just what is the difference between sensing and perceiving? And how does vision actually work? And what does this have to do with a Corgi? In this episode of Crash Course Psychology, Hank takes us on a journey through the brain to better...
Curated Video
%$?# Allergies!
Springtime means the arrival of green grass, bright flowers, and buzzing bees. But for many of us, it's also about sneezing, watery red eyes, and a runny nose, thanks to allergies. In this week's video, you'll learn why we get allergies,...
Crash Course
Big Guns: The Muscular System - CrashCourse Biology
Hank tells us the story of the complicated chemical dance that allows our skeletal muscles to contract and relax.
SciShow
Hydrogen: The Savior of the Shipping Industry
Huge container ships relying on fossil fuels transport all kinds of goods across the ocean, creating a huge climate change impact. But there's a better way to power this transport using, of all things, water.
SciShow
The 5 Most Important Molecules in Your Body
Your body has all sorts of complicated processes going on, and a lot of them are carried out by incredibly powerful molecules. We're not talking nutrients -- we're talking about 5 of the molecules that keep you ticking!
Bozeman Science
Elements of a Feedback Loop
Paul Andersen defines the major elements of feedback loops. The receptors and effectors both sense and respond to changes in their environment. The following examples are used to illustrate the importance of feedback loops in maintaining...
Bozeman Science
Phases of Meiosis
In this video Paul Andersen explains the major phases of meiosis including: interphase, prophase I, metaphase I, anaphase I, telophase I, cytokinesis, interphase II, metaphase II, anaphase II, and telophase II. He explains how variation...
SciShow
Carnivorous Sponges — So That's a Thing
There aren't many creatures as safe and chill as the humble sea sponge, right? Well, not so fast! It turns out there's a whole family of carnivorous sponges that trap and eat small animals using spines and migrating stomaches!
SciShow
A New Mathematical Model of the Origin of Life
Scientists have once again used big, complex math equations to help us understand more about the universe we inhabit, this time about the origins of life on earth.
SciShow
A Zombie Gene Keeps Elephants from Getting Cancer | SciShow News
Elephants are huge, so you might think all those extra cells would mean more cancer, but scientists have some new insights into why this is isn't the case.
SciShow
What Happens If You Go Without Water?
Ever wondered what happens to your body if you don't get enough water? Our bodies are mostly water by weight, so in today's episode of SciShow Hank explains what happens to your body as it starts to shut down when you go without that...
SciShow
6 of the Biggest Single-Celled Organisms
When you picture a single cell, you probably imagine something super tiny that you had to look at through a microscope. But, there are some huge exceptions to this rule. And we really do mean huge. Chapters Stentor coeruleus 1:27 Gromia...
Be Smart
Do Fish Pee?
You know you’ve wondered. Do fish actually pee? And what does that make the ocean… one big toilet?
PBS
How Sex Became A Thing
We don't know which living thing was the very first to arrive at the totally revolutionary process that is sexual reproduction but we can follow the history of how (and why) sex became a thing.
Amoeba Sisters
DNA, Chromosomes, Genes, and Traits: An Intro to Heredity
Explore DNA structure/function, chromosomes, genes, and traits and how this relates to heredity! Video can replace old DNA structure & function video and in addition covers foundational concepts of heredity. Table of Contents: Video...
Bozeman Science
Epigenetics
Paul Andersen explains the concepts of genetics. He starts with a brief discussion of the nature vs. nurture debate and shows how epigenetics blurs this distinction. He explains how differentiation of cell types results from the...
SciShow
CRISPR: A Gene-Editing Superpower
Any molecular biologist will tell you that genetic engineering is tricky. But up until recently we might be witnessing a new age in human development.
SciShow
Why HIV Isn't a Death Sentence Anymore
In the second video of our two-part series on HIV and AIDS, we look at the challenges that have kept scientists from developing a cure, and the treatments that have still managed to improve the outlook for those infected. Chapters View...