Catalyst University
Branching of the Thoracic Aorta
In this video, we explore the arteries supplying the tissues and organs of the thoracic cavity, especially those originating from the thoracic aorta.
Curated Video
What the Smell of Freshly Cut Grass Really Means...
Spring is in the air! It’s time to mow the lawn and breathe in the smell of freshly cut grass. But this pleasant springtime scent may actually be a chemical cry for help. In the latest Reactions episode, we explain how plants...
Teacher's Pet
The Flow of Energy: Heat
Learn about heat energy, how it moves, what its units are and how its calculated in this video! transcript_________________________ energy is one of those things in science that can be hard to wrap your head around. Energy is the...
Bozeman Science
Unit 2 Review - Speciation
Paul Andersen reviews the major concepts within the second unit of the new AP Biology framework. He starts by describing how life is organized into three domains. He explains how the history of life on the planet is characterized by mass...
Crash Course
Einstein's Revolution: Crash Course History of Science #32
There's a reason that Einstein is known as the father of modern physics! Get to know Einstein and how he revolutionized the branch of science known as physics. Scholars learn how Einstein's unique view of motion and the universe built a...
Crash Course
Ecology: Crash Course History of Science #38
Relive the birth of ecology and its different branches. The narrator of the 37th video lesson in a History of Sciences series explains the systems nature of ecology. He then explores the major advances of ecology from a historical...
Crash Course
Advanced CPU Designs: Crash Course Computer Science #9
Faster is always better, right? The ninth installment of a series on computer science focuses on advancements in CPU design and speed. The video covers instruction pipelining, cache, FLOPS, branch prediction, multi-core processors, and...
Crash Course
How to Become an Engineer: Crash Course Engineering #45
Interested in becoming an engineer? An informational and educational video teaches viewers about the various ways to become an engineer. It uses an example of building an airplane wing to describe the branches of engineering that...
Curated OER
Advanced Genetics
Are your biologists ready for advanced genetics? Briefly learn about Gregor Mendel, and dive into the phylogenetic tree, linked genes, multiple genes and nonnuclear inheritance! Mr. Anderson continues his clear instruction and use of...
Be Smart
There Was No First Human
Darwin was the first to describe a Tree of Life in 1859; since then, the idea has grown both literally and metaphorically. The video explains ancestry and its origins. How many generations back was the first human? How many generations...
Crash Course
To the Moon and Mars - Aerospace Engineering: Crash Course Engineering #34
Did you know that space flight has its own field of engineering? The 34th video in the Crash Course Engineering series looks at aerospace engineering and its two branches, aeronautical engineering and astronautical engineering. It...
Crash Course
Crash Course Computer Science #3: Boolean Logic & Logic Gates
This video focuse on Boolean Logic and Logic Gates. Today, Carrie Anne is going to take a look at how those transistors we talked about last episode can be used to perform complex actions. With the just two states, on and off, the flow...
Crash Course
Crash Course Computer Science #9: Advanced Cpu Designs
This video focuses on advanced CPU designs. So now that we've built and programmed our very own CPU, we're going to take a step back and look at how CPU speeds have rapidly increased from just a few cycles per second to gigahertz! These...