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
Does Hand Sanitizer Create Superbugs?
Alcohol-based hand sanitizers are an effective way to kill a myriad of potentially harmful microbes. But is there a risk of germs becoming resistant to this ubiquitous liquid?
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?
TED-Ed
TED-Ed: The cancer gene we all have - Michael Windelspecht
Within every cell in our body, two copies of a tumor suppressor gene called BRCA1 are tasked with regulating the speed at which cells divide. Michael Windelspecht explains how these genes can sometimes mutate, making those cells less...
TED-Ed
TED-ED: How do fish make electricity? - Eleanor Nelsen
Nearly 350 species of fish have specialized anatomical structures that generate and detect electrical signals. Underwater, where light is scarce, electrical signals offer ways to communicate, navigate, find, and sometimes stun prey. But...
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
How 5G Cell Service Could Hurt Weather Forecasts
Good weather forecasts save lives, but scientists are worried that 5G transmissions could drown out frequencies measured by weather satellites, setting weather forecasts back decades.
SciShow
The Horrible Reason Rolly Pollies are Sometimes Blue
If you uncover a bunch of rolly pollies under a log, you don't expect to find a bright blue one crawling among all the usual grays and browns. But it turns out your fun surprise is some very bad luck for that terrestrial isopod.
SciShow
Can You Keep Donating and Regrowing Your Liver?
Fun Fact: people can donate over half of their liver, and the tissue will grow back within a year! Knowing that, it seems pretty logical to assume that we could just keep donating and regrowing our livers over and over again, but is that...
TED-Ed
TED-Ed: The cockroach beatbox - Greg Gage
By dissecting a cockroach ... yes, live on stage ... TED Fellow and neuroscientist Greg Gage shows how brains receive and deliver electric impulses -- and how legs can respond. (Launching a series on Awesome Nature) "The Cockroach...
TED-Ed
TED-Ed: What happens when your DNA is damaged? - Monica Menesini
The DNA in just one of your cells gets damaged tens of thousands of times per day. Because DNA provides the blueprint for the proteins your cells need to function, this damage can cause serious issues-including cancer. Fortunately, your...
SciShow
Why Genetic Engineering Can’t Do Everything (Yet)
We've made some great strides in understanding the human genome, but before we can tackle genetic engineering, we have some "chicken and egg" problems to figure out.
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?
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.
Bozeman Science
Development: Timing and Coordination
Paul Andersen explains how genes control the timing and coordination of embryo development. Seed germination initiates the discussion of cell differentiation. The SRY gene and genetic transplantation shows the importance of embryonic...
TED-Ed
TED-Ed: How does anesthesia work? - Steven Zheng
When under anesthesia, you can't move, form memories, or -- hopefully -- feel pain. And while it might just seem like you are asleep for that time, you actually aren't. What's going on? Steven Zheng explains what we know about the...
Bozeman Science
Archaea
In this video Paul Andersen describes the defining characteristics of members in the domain archaebacteria. He starts with a brief description of the phylogeny of this group. He then describes the major characteristics on an archaea,...
Amoeba Sisters
Biological Levels in Biology: The World Tour
The Amoeba Sisters tour through the biological levels of organization: cells, tissues, organs, organ systems, organism, population, community, ecosystem, biome, biosphere! Table of Contents: 00:00 Intro 0:44 Cells 1:42 Tissues 1:51...
TED-Ed
TED-ED: How do scars form? - Sarthak Sinha
It's hard to escape childhood without racking up a few scars. Why do these leftover reminders of a painful cut or crash look different from the rest of our skin? And why do they stick around for so long after the incident that caused...
TED-Ed
TED-Ed: How the COVID-19 vaccines were created so quickly | Kaitlyn Sadtler and Elizabeth Wayne
In the 20th century, most vaccines took over a decade to research, test, and produce. But the vaccines for COVID-19 were cleared for emergency use in less than 11 months. The secret behind this speed is a medical technology that's been...
SciShow
6 Bacteria with Awesome Superpowers
Bacteria have evolved some pretty incredible abilities. They may never star in a big summer movie, but here are six bacteria with amazing superpowers.
Bozeman Science
The Endocrine System
Paul Andersen explains the major elements in the endocrine system. He explains how glands produce hormones which target cells. He differentiates between water soluble and lipid soluble hormones. He then describes the hormones and actions...
TED Talks
Siddhartha Mukherjee: Soon we'll cure diseases with a cell, not a pill
Current medical treatment boils down to six words: Have disease, take pill, kill something. But physician Siddhartha Mukherjee points to a future of medicine that will transform the way we heal.
SciShow
How Health Affects Sperm
Welcome back to SciShow News! Michael Aranda explains how a male's health affects their sperm.