Bozeman Science
Water Pollution
In this video Paul Andersen explains how water quality can be degraded by pollutants. Wastewater is the main source of water pollution and can be measure using the BOD (biochemical oxygen demand). Dead zones, cultural eutrophication,...
SciShow Kids
Soil Is Alive!
Jessi and Squeaks make a new friend named Grady, and he teaches them about all the living things you can find in soil!
Disciplinary Core Idea:
LS4.D: Biodiversity and Humans - There are many different kinds of living things in any area,...
PBS
What Was the Ancestor of Everything?
The search for our origins go back to a single common ancestor -- one that remains shrouded in mystery. It's the ancestor of everything we know and today scientists call it the last universal common ancestor, or LUCA.
Bozeman Science
AP Biology Practice 6 - Scientific Explanations and Theories
In this video Paul Andersen explains how scientific theories are created and modified over time. He starts by discussing the theory of natural selection as a model for the creation and modification of theories. He gives examples of...
TED-Ed
TED-ED: How the food you eat affects your gut - Shilpa Ravella
The bacteria in our guts can break down food the body can't digest, produce important nutrients, regulate the immune system, and protect against harmful germs. And while we can't control all the factors that go into maintaining a healthy...
SciShow
Meet Your Microbiome
What you don't know about your microbiome may kill you!!! ...or just give you diarrhea.
SciShow Kids
What’s the Dirt on... Dirt?
A SciShow Kids viewer has asked us: What is dirt made of? Join Jessi to get the dirt on … dirt!
Bozeman Science
Cellular Respiration
Paul Andersen covers the processes of aerobic and anaerobic cellular respiration. He starts with a brief description of the two processes. He then describes the important parts of the mitochondria. He explains how energy is transferred...
MinuteEarth
Why Is Lyme Disease Getting Worse?
Thanks to the University of Minnesota for sponsoring this video! Lyme disease is spreading like wildfire around the world: here's why. ___________________________________________ If you liked this week’s video, you might also like:...
MinuteEarth
Why Do Some Animals Eat Poop?
Animals eat their own poop in order to gain extra access to nutrients or to microbes that help digest those nutrients. ___________________________________________ To learn more, start your googling with these keywords: Coprophagy:...
SciShow
Are Hand Dryers Sanitary?
Public bathrooms are teeming with microbes! You know to wash your hands, but when choosing between a hand dryer or a paper towel to dry them off, what's your cleanest bet?
TED Talks
TED: A next-gen cure for killer infections | Kary Mullis
(NOTE: This talk was given in 2009, and this field of science has developed quickly since then. Read "Criticisms & updates" below for more details.) Drug-resistant bacteria kills, even in top hospitals. But now tough infections like...
SciShow
What Really Happened with Typhoid Mary
The famous symptomless carrier of Typhoid Fever, Mary Mallon, never felt the effects of the fever, but never recovered from a medical system that didn’t know how to treat a carrier of the disease.
TED-Ed
TED-Ed: Why is pneumonia so dangerous? | Eve Gaus and Vanessa Ruiz
Every time you breathe, air travels down the trachea, through a series of channels, and then reaches little clusters of air sacs in the lungs. These tiny sacs facilitate a crucial exchange: allowing oxygen from the air we breathe into...
SciShow
New York Citys Microbiome
You might guess that big city subways would be filled with all sorts of nasty pathogens just waiting to infect the nearest unsuspecting human, but science doesn’t back this up at all.
SciShow
Injecting Yourself with Killer Bacteria
Like every rose has its thorn, the fangblenny is an adorable fish with sharp fangs and potent venom. But scientists think we might be able to use their venom as a painkiller! Meanwhile, a killer bacterium could be a promising new...
SciShow
Why Getting Sick in Space Is the Worst
We've talked about some of the ways microgravity can negatively affect humans, but for bacteria, being in space might be quite beneficial!
SciShow
Is Urine Really Sterile
Despite what you might've seen on some wilderness-survival show, there's increasing evidence that your pee isn't sterile. So don't do anything crazy with it. Sci Show explains!
SciShow
New Bacterial Enzymes Could Revolutionize Blood Donations SciShow News
Blood banks need a constant supply of donors to maintain their supply, but some enzymes that are already in our bodies might be able to help!
TED-Ed
TED-Ed: How mucus keeps us healthy - Katharina Ribbeck
Your body produces more than a liter of mucus every day, and when you're sick, it can be hard to miss. But what exactly is mucus? And what does it do, besides making you miserable? Katharina Ribbeck reveals the mysteries of this...
TED-Ed
TED-ED: The accident that changed the world - Allison Ramsey and Mary Staicu
In 1928, scientist Alexander Fleming returned to his lab and found something unexpected: a colony of mold growing on a Petri dish he’d forgotten to place in his incubator. And around this colony of mold was a zone completely and...
TED-Ed
TED-Ed: Hacking bacteria to fight cancer | Tal Danino
In 1884, an unlucky patient who had a rapidly growing cancer in his neck came down with an unrelated bacterial skin infection. As he recovered from the infection, the cancer surprisingly began to recede. The infection had stimulated the...
SciShow
Weird Places Blood Falls
In our continuing series on Earth's weirdest places, Hank describes the crazy place in Antarctica known as Blood Falls in all its scientifically strange majesty.
SciShow
Tiny Extremophiles Living in Rocks!
In freezing cold sand, a burning hot mine, or even inside solid rock _ these extremophiles live anywhere that you wouldn't want to live. What are they? How can they live in such extreme places?