Bozeman Science
Mechanisms that Increase Genetic Variation
Paul Andersen describes mechanisms that increase the genetic variation within a population. He begins by discussing how horizontal transfer can move genetic material between bacteria. Transformation, transduction, and conjugation in...
Crash Course
Fitting Models Is like Tetris - Crash Course Statistics
Today we're going to wrap up our discussion of General Linear Models (or GLMs) by taking a closer looking at two final common models: ANCOVA (Analysis of Covariance) and RMA (Repeated Measures ANOVA). We'll show you how additional...
Bozeman Science
Biodiversity
Paul Andersen explains the importance of biodiversity. He starts by describing how biodiversity can be species, genetic or ecosystem diversity. He explains the importance of keystone species in an environment and gives two examples; the...
SciShow
Common Misconceptions About Evolution
Evolution is particularly vulnerable to misunderstandings around the scientific language. SciShow clears up some confusing language!
Crash Course
Darwin and Natural Selection: Crash Course History of Science
"Survival of the Fittest" sounds like a great WWE show but today we're talking about that phrase as it relates to Charles Darwin and Alfred Wallace. Darwin and Wallace are at the heart of understanding evolution and natural selection....
Bozeman Science
Population Variation
Paul Andersen explains the importance of genetic variation within a population. He begins with a discussion of the devil facial tumor that is a form of cancer transferred between Tasmanian devils. He then explains how a decrease in...
Crash Course
Test Statistics - Crash Course Statistics
Test statistics allow us to quantify how close things are to our expectations or theories. Instead of going on our gut feelings, they allow us to add a little mathematical rigor when asking the question: “Is this random… or real?” Today,...
TED Talks
Juliet Brophy: How a new species of ancestors is changing our theory of human evolution
In 2013, a treasure trove of unusual fossils were uncovered in a cave in South Africa, and researchers soon realized: these were the remains of a new species of ancient humans. Paleoanthropologist Juliet Brophy takes us inside the...
Crash Course
Natural Selection - Crash Course Biology
Hank guides us through the process of natural selection, the key mechanism of evolution.
Bizarre Beasts
We Thought These Snakes Were All The Same
New ReviewEyelash vipers were thought to be one widely distributed species that came in a lot of colors, but they’re actually more like five to nine different snakes that each come in a rainbow of colors...even within the same litter... so, how...
Curated Video
Species Change Overtime
New ReviewThis video describes various ways that species change over time such as variation, binary fission, adaption, mutation, envirvonmental changes, and extinction.
Curated Video
How to Do Eye Makeup for the Prom
Howcast - Learn how to do eye makeup for prom from professional makeup artist Michelle Dittrich in this Howcast eye makeup tutorial.
Curated Video
How to Do Ab Workout w/ Exercise Ball
Howcast - Learn how to do ab exercises with an exercise ball from personal trainer Erin Sharoni in this Howcast workout video.
Curated Video
How to Play Snare Drum Beat Variations
Howcast - Learn how to play snare drum beat variations from drum teacher Jason Gianni in this Howcast drum video.
Curated Video
5 Tips & Techniques for More Accurate Shooting in Archery
Howcast - Pick up some tips and techniques for more accurate shooting from the pros at Queens Archery in this Howcast video.
Curated Video
How to Do the Scissors Ab Workout
Howcast - Learn how to do scissors from certified personal trainer James Rizzo in this home ab workout video from Howcast.
Curated Video
How to Do a Dumbbell Twist
Howcast - Learn how to do a dumbbell twist from certified personal trainer James Rizzo in this home ab workout video from Howcast.
Curated Video
How to Defend Against a Slap Punch in Brazilian Jiu Jitsu
Howcast - Learn how to defend yourself against a slap punch from Alliance MMA black belt Babs Olusanmokun in this Howcast Brazilian Jiu Jitsu video.
Curated Video
How to Do a Hip Dumbbell Chest Press at the Gym
Howcast - Learn how to do a hip dumbbell press from certified personal trainer Max Tapper in this Howcast gym workout video.
Curated Video
How to Do Ikkyo in Aikido
Howcast - Learn how to do ikkyo from the instructors at The New York Aikikai in this Howcast aikido video.
Curated Video
How to Do Mountain Climbers & Leg Drives for a Leg Workout
Howcast - Learn how to do mountain climbers and leg drives from personal trainer Mindi Smith in this Howcast sexy legs workout video.
Curated Video
How to Do the Kiri Age Katana Technique 2nd Variation
Howcast - Learn how to do the kiri age technique second variation from Sensei Oliver Martin in this katana sword fighting video from Howcast.
Curated Video
How to Do the Kiri Age Katana Variation in Sword Fighting
Howcast - Learn how to do the kiri age technique variation from Sensei Oliver Martin in this katana sword fighting video from Howcast.
Curated Video
Flamenco Guitar Techniques: How to Play Alzapua Variations
Howcast - Learn how to play alzapua variations in this flamenco guitar lesson video from Howcast.