SciShow
What Makes a Species a Species
Sorting organisms into categories seems pretty simple at first, but look a little closer and things get weird.
SciShow
How Extreme Microbes Are Helping Us Test for COVID-19
Microbes that live in extreme environments, like geysers and hydrothermal vents, are able to survive in extreme temperatures. Scientists have figured out ways to use this thermostability to supercharge DNA studies, including the study of...
Bozeman Science
LS4C - Adaptation
In this video Paul Andersen defines adaptations and explains how organisms can become better adapted to their surroundings using the process of natural selection. Specific examples of adaptations, like coat color in rock pocket mice, as...
SciShow
Biofluorescence: A Neon World Hidden in Plain Sight
Lots of life on Earth can fluoresce, creating a beautiful neon world of camouflage, communication, and adaptation that is hidden from the human eye.
TED-Ed
TED-ED: Why extremophiles bode well for life beyond Earth - Louisa Preston
Life on Earth requires three things: liquid water, a source of energy within a habitable range from the sun and organic carbon-based material. But life is surprisingly resilient, and organisms called extremophiles can be found in hostile...
TED-Ed
TED-Ed: Meet the tardigrade, the toughest animal on Earth - Thomas Boothby
Without water, a human can only survive for about 100 hours. But there's a creature so resilient that it can go without it for decades. This 1-millimeter animal can survive both the hottest and coldest environments on earth, and can even...
SciShow
High-Tech Ways Genomics is Changing Field Biology
To figure out an organism's genome and DNA sequence, field biologists need big, expensive equipment in the labs. But, new high-tech devices help scientists to examine samples on the sites!
SciShow
5 Ecosystems Thriving in the Least Likely Places
Around the world, living things have managed to build truly extraordinary ecosystems in some of the last places you would think to look. Understanding these ecosystems can help us protect or repair them, and it can also help us...
SciShow
Why Sex?
Hank gets into why sex is the preferred method of reproduction for most species - and it's not for the reasons you're thinking.
SciShow
The Mystery of the Biggest Genomes
3 billion base pairs is a pretty typical genome size for organisms like us, but there are a few plants and animals with genomes so huge they completely blow this number out of the water.
Bozeman Science
Response to External Environments
Paul Andersen explains how organisms respond to the external environment. He begins with a discussion of behavioral responses like hibernation and migration. He ends with a discussion of physiological responses like shivering and...
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...
Bozeman Science
LS2C - Ecosystem Dynamics, Functioning and Resilience
In this video Paul Andersen explains how ecosystems respond to disruptions. Disruptions can cause changes in the number and variety of organisms. It can also lead to migration, extinction or even speciation. Ecosystems that have a higher...
Crash Course
How Do We Produce Food? Crash Course Geography
Over the millennia, every region on Earth has developed its own successful agricultural ecosystem from flat fields of grain and mountainside rice terraces to coastal fish farms and goat herding. Today, we’re going to break down...
SciShow
Big Data, Wildlife Conservation, and InverteBRITs | SciShow Talk Show
SciShow Psych host Brit Garner joins Hank to talk about wildlife conservation, big data, and Complexly’s new show Nature League, and Jessi stops in with a whole mess of invertebrates.
Amoeba Sisters
Autotrophs and Heterotrophs
Curious about modes of nutrition? Join the Amoeba Sisters in learning about autotrophs and heterotrophs. Video explains these terms as well as how their carbon source differs. Photoautotrophs, photoheterotrophs, chemoautotrophs, and...
Crash Course
Fungi: Death Becomes Them - CrashCourse Biology
Death is what fungi are all about. By feasting on the deceased remains of almost all organisms on the planet, converting the organic matter back into soil from which new life will spring, they perform perhaps the most vital function in...
Bozeman Science
Cladograms
Paul Andersen shows you how to construct a cladogram from a group of organisms using shared characteristics. He also discusses the process of parsimony in cladogram construction. He then explains how modern cladograms are constructed and...
SciShow
Gynandromorphs: Dual-Sex Animals
SciShow explores one of the more rare and unusual results of sexual reproduction: gynandromorphy, in which an animal is part male and part female.
TED-Ed
TED-Ed: The genes you don't get from your parents (but can't live without) | Devin Shuman
Inside our cells, each of us has a second set of genes completely separate from our 23 pairs of chromosomes. And this isn't just true for humans— it's true of every animal, plant, and fungus on Earth. This second genome belongs to our...
SciShow
Why Can't We Make Spider Silk?
People have been using silkworm silk to make stuff for thousands of years, but spider silk could potentially be even more useful. It's stronger than steel, super stretchy, and could be made into anything from bridge cables to...
TED-Ed
TED-Ed: Dead stuff: The secret ingredient in our food chain - John C. Moore
When you picture the lowest levels of the food chain, you might imagine herbivores happily munching on lush, living green plants. But this idyllic image leaves out a huge (and slightly less appetizing) source of nourishment: dead stuff....
Amoeba Sisters
Fermentation
What happens when you can't do aerobic cellular respiration because oxygen isn't available? Explore fermentation with The Amoeba Sisters! This video focuses on alcoholic fermentation and lactic acid fermentation, and it also mentions how...
Crash Course
Taxonomy: Life's Filing System - Crash Course Biology
Hank tells us the background story and explains the importance of the science of classifying living things, also known as taxonomy.