Bozeman Science
Comparing DNA Sequences
Paul Andersen shows you how to compare DNA sequences to understand evolutionary relationships. He starts with a brief introduction to cladograms and evolutionary relationships. He shows you how to classify DNA relationships using a...
SciShow
Oxygen is Killing You
Hank introduces us to oxygen - the element that makes it possible for most animals to live, but which is simultaneously responsible for a lot of bad things going on in our bodies.
SciShow
Venomous Mammals, Sensory Receptors & the Moon's True Origin Story
Hank describes to us some news stories that illustrate how science is continually changing the things we think we "know" - from the status of various animals species, to the way our senses work and even where the Moon came from -...
SciShow
Changing DNA in a Cell With No DNA: Gene Therapy for Blood Disorders
Lots of genetic diseases come down to a small change in a single gene, but how do you treat those diseases when the cells involved don’t have any DNA?
SciShow
What Does "Organic" Mean, and Should You Buy Organic Foods?
There’s a lot of confusion over what organic means, and food with that label might not be as healthy or environmentally friendly as you think.
SciShow
Here's What DNA Really Looks Like
There’s more to DNA than just the double helix we know and love: under some conditions this familiar molecule can take on unfamiliar forms, each of which can have a different impact on our health.
SciShow
A Blood Test for Cancer
Since many cancers don’t have symptoms early on, they may go unnoticed until they are at an advanced stage. But that is changing, thanks to a newer, non-invasive tool.
SciShow
How a Sick Chimp Led to a Global Pandemic: The Rise of HIV
In the first video in our two part series on HIV and AIDS, we explain how scientists figured out what HIV is, when the infection morphs into AIDS, and where they think the virus originated.
TED Talks
TED: Clues to prehistoric times, found in blind cavefish | Prosanta Chakrabarty
TeD Fellow Prosanta Chakrabarty explores hidden parts of the world in search of new species of cave-dwelling fish. These subterranean creatures have developed fascinating adaptations, and they provide biological insights into blindness...
Crash Course
Mitosis: Splitting Up is Complicated - Crash Course Biology
Hank describes mitosis and cytokinesis - the series of processes our cells go through to divide into two identical copies.
SciShow
Why Herpes Is the Most Talented Virus Ever
Unlike with many other viruses, once you get a herpesvirus you’re stuck with it for life. But just how do these master trespassers accomplish this feat?
SciShow
How Neanderthals Ended Up With Human Chromosomes
This week we learned that the Neanderthal/Denisovan/Human family tree is pretty complicated, thanks to a close look into some Neanderthals' Y chromosomes.
TED Talks
How synthetic biology can improve our health, food and materials | Emily Leproust
What if we could use biology to restore our balance with nature without giving up modern creature comforts? Advocating for a new kind of environmentalism, scientist and entrepreneur Emily Leproust rethinks modern sustainability at the...
SciShow
7 Animals That Evolved at Hyperspeed — Because of Us
Evolution is known to be a long, slow process. But thanks to our interference, some animals have adapted at light speed in order to survive. Chapters 1 CLIFF SWALLOWS 2:45 SPORT FISH 3:04 MOSQUITOES 4:28 TURTLE-HEADED SEA SNAKES 6:09...
SciShow
Cyclopia: A Rare Birth Defect That Could Help Cure Cancer
With a greater understanding of biological mechanisms, humans may be able to take a devastating birth defect and turn it into a treatment for cancer.
SciShow
What Happens If You Fuse All Your Chromosomes? | SciShow News
Two separate groups of biologists reported fusing entire sets of Saccharomyces cerevisiae chromosomes together, and surprisingly, the actual number of chromosomes might not be as important as we thought.
TED Talks
TED: How digital DNA could help you make better health choices | Jun Wang
What if you could know exactly how food or medication would impact your health -- before you put it in your body? Genomics researcher Jun Wang is working to develop digital doppelgangers for real people; they start with genetic code, but...
Bozeman Science
Meselson-Stahl Experiment
Paul Andersen explains how the Meselson-Stahl experiment was used to prove that DNA copied itself through a semi-conservative process. They grew E. coli in a medium containing heavy nitrogen (N-15). They then added the E. coli to a...
SciShow
Why Ferns Have More Chromosomes Than You
Chromosomes are fascinating little things, and today, Hank explains why more of them doesn't mean more complex, and why different organisms have different numbers of chromosomes. The short answer: mistakes happen.
SciShow
SciShow Talk Show: Carl Zimmer & Genetics
Curious about genetics? Dig in a little deeper with this special SciShow Talk Show featuring science writer and 2016 Stephen Jay Gould prize winner Carl Zimmer talking about what he did after receiving himself on a hard drive.
SciShow
The Science of Men
Learn about the history of dudes, and a new theory about deep voices in this new episode of SciShow News. You know, science... bro... stuff.
TED Talks
John Lloyd: An animated tour of the invisible
Gravity. The stars in day. Thoughts. The human genome. Time. Atoms. So much of what really matters in the world is impossible to see. A stunning animation of John Lloyd's classic TEDTalk from 2009, which will make you question what you...
Amoeba Sisters
Epigenetics
You know all about how DNA bases can code for an organism's traits, but did you know there's more influencing phenotype than just the bases? Explore epigenetics with the Amoeba Sisters by learning about a few types of epigenetic marks...
SciShow
You Can Inherit Fear?
Everyone is afraid of something, and traditionally, we’ve thought that fears are learned. But the key to understanding some fears could lie in our DNA.