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.
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...
TED-Ed
TED-Ed: The sexual deception of orchids - Anne Gaskett
Check out the fascinating ways orchids trick insects into pollinating, using sexual deception, pheromones and mimicking the shapes of other plants. -- Nearly 28,000 species of orchid grow all around the world, bearing every imaginable...
SciShow
A Brief History of Birth Control
Gym teacher Hank gives us the full story of the past, present, and future of birth control.
TED-Ed
TED-Ed: Is human evolution speeding up or slowing down? | Laurence Hurst
In the past 3,000 years, many populations have evolved genetic adaptations to their local environments. People in Siberia and the high arctic are uniquely adapted to survive extreme cold. The Bajau people can dive 70 meters and stay...
SciShow
Hydras: Our Immortal, Tentacled Friends
While humans age and die (which is kind of a bummer), it looks like hydras will stay young and fertile forever. Why is this? And what can we learn from these tentacular microscopic organisms?
SciShow
How an Army of Crayfish Clones Took Over Europe
It sounds like something out of a sci-fi movie: a new crayfish population made entirely of asexually reproducing, all-female clones. But is it a new species?
Crash Course
The Handmaid's Tale, Part 1: Crash Course Literature 403
In which John Green teaches you about Margaret Atwood's speculative fiction novel, The Handmaid's Tale. John looks at some of the themes in this classic dystopian novel, many of which are kind of a downer. The world of Gilead that Atwood...
Curated Video
Human Population Growth - Crash Course Ecology
If being alive on Earth were a contest, humans would win it hands down. We're like the Michael Phelps of being alive, but with 250,000 times more gold medals. Today Hank is here to tell us the specifics of why and how human population...
Crash Course
Sex & Sexuality: Crash Course Sociology
While sociology is a social science, we can use it to explore some intensely personal, private things. Today we’ll explore what sociology can tell us about sex and sexuality. We’ll also see what the three sociological paradigms have to...
Crash Course
The Sex Lives of Nonvascular Plants: Alternation of Generations - Crash Course Biology
Hank introduces us to nonvascular plants - liverworts, hornworts & mosses - which have bizarre features, kooky habits, and strange sex lives. Nonvascular plants inherited their reproductive cycle from algae, but have perfected it to the...
Crash Course
The Plants & The Bees: Plant Reproduction - CrashCourse Biology
Hank gets into the dirty details about vascular plant reproduction: they use the basic alternation of generations developed by nonvascular plants 470 million years ago, but they've tricked it out so that it works a whole lot differently...
Crash Course
Copyright, Exceptions, and Fair Use: Crash Course Intellectual Property
Stan Muller teaches you a few things about copyright enforcement, and talks about the exceptions to copyright enforcement. While there are several, the one you've probably heard of is Fair Use, and it's a pretty tricky one. We'll try to...
Curated Video
The Importance and Wonders of DNA: Exploring its Role in Life and Science
This video provides a brief and engaging overview of DNA and its significance in biology. It explains how DNA is the genetic material that determines the unique characteristics of living organisms, how it is passed down through...
Curated Video
Genotype
The genetic make-up of an individual. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract concepts and key...
Curated Video
Divergence
The process by which new species or variations within species evolve in populations. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...
Curated Video
Hormones
Chemical substances produced in our bodies that act as messengers, communicating between our different cells and organs. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise...
Curated Video
Clone
A genetically identical copy of a piece of DNA, or an entire organism. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...
Curated Video
Bacteria
Single-celled microorganisms, which do not have a nucleus, and reproduce by simple cell division. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...
Curated Video
Pollen
Tiny particles produced by male plants that contain the male reproductive cells enclosed in a protective shell. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
Curated Video
Stamen
The male reproductive organ of a flower. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract concepts and key...
Curated Video
Asexual reproduction
Reproduction involving just one parent, without the mixing of genetic material with another individual. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....
Curated Video
Virus
A very small infectious agent that can reproduce only inside other cells. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...
Curated Video
Artificial propagation
Producing new plants by human intervention and artificial methods. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...