MinuteEarth
The Secret Global Sewer System
Ditches and drain pipes help crops survive but can negatively impact the broader landscape.
Amoeba Sisters
Muscle Tissues and Sliding Filament Model
Join the Amoeba Sisters a they explore different muscle tissues and then focus on the sliding filament theory in skeletal muscle! This video also briefly talks about muscle naming, some vocabulary (such as agonists and antagonists)...
Bozeman Science
Population Modeling
Paul Andersen shows you how we can use a spreadsheet to model population changes. He begins with a brief discussion of populations and life cycles. He then shows you how you can model a single generation using a spreadsheet.
TED-Ed
TED-Ed: Can you solve the multiplying rabbits riddle? - Alex Gendler
After years of experiments, you’ve finally created the pets of the future – nano-rabbits! They’re tiny, they’re fuzzy ... and they multiply faster than the eye can see. But a rival lab has sabotaged you, threatening the survival of your...
Bozeman Science
Transport Across Cell Membranes
Paul Andersen describes how cells move materials across the cell membrane. All movement can be classified as passive or active. Passive transport, like diffusion, requires no energy as particles move along their gradient. Active...
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!
SciShow
Hydras Are What They Eat
You may have to open your mouth pretty wide to take a bite of a burger, but a Hydra can tear open its mouth to devour food larger than itself.
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...
Crash Course
In Da Club - Membranes & Transport: Crash Course Biology
Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane.
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...
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,...
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.
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
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!
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
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 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.
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...
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
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.
Be Smart
Do Fish Pee?
You know you’ve wondered. Do fish actually pee? And what does that make the ocean… one big toilet?
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...