This art history video discussion looks at Gian Lorenzo Bernini's "Ecstasy of Saint Theresa", 1647-52 (Cornaro Chapel, Santa Maria della Vittoria, Rome).

This art history video discussion examines Gian Lorenzo Bernini's "Pluto and Proserpina" (also know as the Rape of Proserpina), 1621-22, marble (Galleria Borghese, Rome). Proserpina is the Latin varient of the mythic Greek Persephone.

This art history video discussion looks at Gian Lorenzo Bernini's "Saint Peter's Square (Piazza San Pietro)", Vatican City, Rome, 1656-67.

This art history video discussion looks at Gian Lorenzo Bernini's "Sant'Andrea al Quirinale", 1658-70, Rome; commissioned by Cardinal Camillo Francesco Maria Pamphili for the nearby Jesuit seminary.

Are you ready to learn something about the world? Then you're ready for Bertolt Brecht, and his ideas about Epic Theater. Brecht wanted to lean into the idea of theater as a tool to upset and educate the world about stuff like the struggles of the working class and the problematic aspects of capitalism. He wanted to SHOCK people into seeing the world as it is and taking action, rather than merely entertain audiences. But, he messed up, and wrote some pretty entertaining stories, with some really catchy music integrated into it. And do, people ended up whistling Mack the Knife instead of throwing off the shackles of an oppressive social order. To be fair, it is a catchy tune. Today you're going to learn about Brecht, Epic Theater, and a little bit about the House UnAmerican Activities Committee. Because those jerks hauled Brecht up in 1948 to shake him down about whether or not he was a communist.

Bianca visits a bike shop and learns how bicycle gears work in this Cyberchase video segment.

This Cyberchase video segment features Bianca, who must figure out the fastest route to a movie premiere.

This video segment from Cyberchase introduces the idea of inverse operations as Bianca imagines herself as a spy.

In which Craig Benzine teaches you about the United States Congress, why it's bicameral, and what bicameral means. Craig tells you what the Senate and House of Representatives are for, talks about some of the histories of the institutions, and reveals to you just how you can become a representative. It's not that easy. But an eagle gets punched, so there's that.

Thanks to observations of galaxy redshifts, we can tell that the universe is EXPANDING! Knowing that the universe is expanding and how quickly it's expanding also allows us to run the clock backward 14 billion years to the way the universe began - with a bang.

Chapters:
Introduction: The Origins of the Universe
Distant Galaxies Show a Redshift in Their Spectra
The Universe is Expanding
The Big Bang
Lookback Time
The Cosmic Microwave Background
What is the Universe Expanding Into?
Review

In which John Green, Hank Green, and Emily Graslie teach you about, well, everything. Big History is the history of everything. We're going to start with the Big Bang, take you right through all of history (recorded and otherwise), and even talk a little bit about the future. It is going to be awesome. In the awe-inspiring sense of the word awesome. In this episode, we walk you through the start of everything: The Big Bang. We'll look at how the universe unfolded at its very beginning, and how everything in the universe that we know today came into being. So that's kind of a big deal, right?

There is a lot of excitement around the field of Big Data, but today we want to take a moment to look at some of the problems it creates. From questions of bias and transparency to privacy and security concerns, there is still a lot to be done to manage these problems as Big Data plays a bigger role in our lives.

Hank tells us the story of the complicated chemical dance that allows our skeletal muscles to contract and relax.

Chapters:
1) Cardiac, Smooth, & Skeletal Muscles
2) Muscle Anatomy
a) Muscle Fibers
b) Myofibrils
c) Sarcomeres
d) Myofilaments
3) Biolography
4) Sliding Filament Model

This series looks at the Oxford Martin School's academics and how their research is making a difference to our global future. The series will be of interest to people who are concerned about the future for the planet, how civilisation will adapt to emerging problems and issues such as climate change, over population, increased urbanisation of populations and the creation of vaccines to fight against future pandemics. The Oxford Martin School academics explain their various research topics in an accessible and thoughtful way and try to find practical solutions to these issues.

In our final episode of Crash Course Engineering we are going to take all the tools and ideas we’ve discussed throughout this series and try to imagine where we’re headed. We’re going to explore some of the biggest problems that today’s engineers are trying to solve and make some guesses about what the future of the field might look like.

Double stars are stars that appear to be near each other in the sky, but if they’re gravitationally bound together we call them binary stars. Many stars are actually part of binary or multiple systems. If they are close enough together they can actually touch other, merging into one peanut-shaped star. In some close binaries, matter can flow from one star to the other, changing the way it ages. If one star is a white dwarf, this can cause periodic explosions, and possibly even lead to blowing up the entire star.

Chapters:
Introduction: Binary & Multiple Stars
Visual Binary Stars
Spectroscopic Binaries
Multiple Star Systems
Eclipsing Binaries
Contact Binaries
Stellar Novae
Review

Today we're going to discuss the Binomial Distribution and a special case of this distribution known as a Bernoulli Distribution. The formulas that define these distributions provide us with shortcuts for calculating the probabilities of all kinds of events that happen in everyday life. They can also be used to help us look at how probabilities are connected! For instance, knowing the chance of getting a flat tire today is useful, but knowing the likelihood of getting one this year, or in the next five years, may be more useful. And heads up, this episode is going to have a lot more equations than normal, but to sweeten the deal, we added zombies!

Bioethics is the study of the moral implications of new and emerging medical technologies and looks to answer questions such as selling organs, euthanasia and whether should we clone people. The series consists of a series of interviews by leading bioethics academics and is aimed at individuals looking to explore often difficult and confusing questions surrounding medical ethics. The series lays out the issue in a clear and precise way and looks to show all sides of the debate.

Although we've spent a lot of time in this series looking at human-made organic chemicals, the term "organic chemistry" was originally used to describe molecules isolated from living things. In this episode of Crash Course Organic Chemistry, we're going back to our roots to learn more about the best synthetic chemists: living things. We'll look at the biochemical building blocks of life from the nitrogenous bases, sugars, and phosphate groups that make up DNA and RNA, to amino acids and lipids, and we'll learn how to convert between Fischer and Haworth projections of carbohydrates.

An introductory series by Marianne Talbot exploring bioethical theories and their philosophical foundations. These podcasts will explain key moral theories, common moral arguments, and some background logic.