Bozeman Science
Effects of Changes in Pathways
Paul Andersen explains how changes in the signal transduction pathway can affect organisms. He begins with a brief discussion of the tetrodotoxin produced by the California Newt and then explains how anthrax affects adenylate cyclase and...
TED Talks
Chuck Murry: Can we regenerate heart muscle with stem cells?
The heart is one of the least regenerative organs in the human body -- a big factor in making heart failure the number one killer worldwide. What if we could help heart muscle regenerate after injury? Physician and scientist Chuck Murry...
SciShow
Why Do We Ride Horses But Not Zebras
Zebras and horses are very similar - so why do we only ride one but not the other?
TED Talks
TED: How to tackle the stigma of living with HIV | Gareth Thomas
After his HIV diagnosis, former pro rugby player Gareth Thomas set out on a mission to tackle the stigma and shame that prevent people from getting the testing and care they need. In this empowering talk, Thomas shares his mission to...
SciShow
What's Killing the World's Amphibians
Of the more than 7,000 known species of amphibians in the world, an estimated one third are now threatened with extinction. Hank breaks down the science behind the decline of amphibians around the world, and what you can do to help.
TED Talks
Margaret Heffernan: Dare to disagree
Most people instinctively avoid conflict, but as Margaret Heffernan shows us, good disagreement is central to progress. She illustrates (sometimes counterintuitively) how the best partners aren’t echo chambers -- and how great research...
TED-Ed
TED-ED: Mysteries of vernacular: Quarantine - Jessica Oreck and Rachael Teel
Stemming from the days of bubonic plague in Medieval Europe, quarantines were originally used to prevent potentially plague-infested ships from disembarking at a port city. Jessica Oreck and Rachael Teel explain how the length of the...
SciShow
Camel Dung was The First Probiotic
Back in the day, bacterial diseases like dysentery were super deadly, but the nomadic people in northern Africa had long known about an effective, if hard to swallow, cure.
TED-Ed
TED-Ed: Why do you get a fever when you're sick? | Christian Moro
There are many mysteries around fever, but we do know that all mammals, some birds and even a few invertebrate and plant species feel fever's heat. It has persisted for over 600 million years of evolution. But it has a significant cost:...
TED Talks
Bart Knols: 3 new ways to kill mosquitoes
We can use a mosquito's own instincts against her. In a rather unforgettable presentation, Bart Knols demos the imaginative solutions his team is developing to fight malaria -- including Limburger cheese and a deadly pill.
SciShow
What Does an Asymptomatic COVID-19 Infection Look Like?
Some people who get sick with COVID-19 don't feel any symptoms of the disease, but what does an asymptomatic COVID-19 infection look like?
SciShow
3 Sad Surprises: The Human Genome Project
Hank tells us three surprises about human DNA which we learned because of the Human Genome Project.
SciShow
Why Can't We Make a Good Salt Substitute?
We have many alternatives to sugar, but where are all the salt substitutes?
TED Talks
David R. Liu: Can we cure genetic diseases by rewriting DNA?
In a story of scientific discovery, chemical biologist David R. Liu shares a breakthrough: his lab's development of base editors that can rewrite DNA. This crucial step in genome editing takes the promise of CRISPR to the next level: if...
SciShow
How the White House Killed Two Presidents
Working in the White House in the 1840s may have been more hazardous than we thought.
SciShow
Fidelity Hormones, Contagious Behavior, and the Meat-Allergy Plague
This week's SciShow News finds Hank up to his elbows in weird disorders and strange behaviors, including a chemical that makes men stay faithful, new insights into what makes some behavior contagious, and the truth about a disease that...
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
7 Medicines That Come from Super Toxic Critters
Scorpion venom and insect poison sound really deadly, but scientists are increasingly turning them into medical treatments that save millions of lives. Chapters CAPTOPRIL 1:18 SOUTH AMERICAN PIT VIPER Credit: Renato Augusto Martins 1:33...
TED-Ed
How do antidepressants work? | Neil R. Jeyasingam
In the 1950s, the discovery of two new drugs sparked what would become a multi-billion dollar market for antidepressants. Neither drug was intended to treat depression at all— many doctors and scientists believed psychotherapy was the...
TED Talks
TED: A new way to think about the transition to motherhood | Alexandra Sacks
When a baby is born, so is a mother -- but the natural (and sometimes unsteady) process of transition to motherhood is often silenced by shame or misdiagnosed as postpartum depression. In this quick, informative talk, reproductive...
TED Talks
TED: Good news in the fight against pancreatic cancer | Laura Indolfi
Anyone who has lost a loved one to pancreatic cancer knows the devastating speed with which it can affect an otherwise healthy person. TED Fellow and biomedical entrepreneur Laura Indolfi is developing a revolutionary way to treat this...
SciShow
5 Weird Things Your Blood Can Tell You
Blood is a pretty remarkable diagnostic tool! It doesn’t just tell you about blood-related diseases, it can reveal information about everything from your brain to your unborn fetus. Chapters PREMATURE BABIES 0:48 CONCUSSIONS 4:11 BLOCKED...
SciShow
Patenting Person Parts
Since the advent of genetic engineering, a lot of weird questions have cropped up, particularly with regard to what information a company can patent. Individual genes, as they are discovered, are now immediately patented and can be...
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.