Explained examines the possibility of extraterrestrial life and looks at why we have not yet found evidence for its existence despite efforts to look for it. It considers the Fermi paradox which suggests that given the vastness of the universe that there should be a great deal of extraterrestrial life in our galaxy. It also consider conspiracy theories about U.F.O.
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Cory Booker and others discuss how slavery, housing discrimination and centuries of inequality have compounded to create a racial wealth gap.
2018 • Economics
Scientific feat or terrifying social experiment? Specialists in the field discuss the high stakes and ethical controversies of gene editing.
2018 • Technology
Cryptocurrency has made people billionaires, but is digital cash the next revolution? Learn about this anonymous currency and why it's so coveted.
2018 • Economics
Explained examines why diets are often unsuccessful. It looks at the science that suggests that low carb, low fat, and body type diets as well as supplements and detoxification regimes simple do not work in helping most people lose weight. While the diet industry pushes us to avoid calories the food industry encourage us to eat more of them.
2018 • Health
Does the stock market accurately reflect the status of the economy? Finance specialists discuss market history, valuations and CEO incentives.
2018 • Economics
The term eSports is short for "electronic sports". It is introduced to describe competitive video gaming. What's competitive video gaming? It's basically just people playing video games in some form of competition.
2018 • Technology
Explained examines the possibility of extraterrestrial life and looks at why we have not yet found evidence for its existence despite efforts to look for it. It considers the Fermi paradox which suggests that given the vastness of the universe that there should be a great deal of extraterrestrial life in our galaxy. It also consider conspiracy theories about U.F.O.
2018 • Astronomy
The story of the exclamation point. How it came to be and are we overusing it today?
2018 • Design
Explained looks at the popular English sport of cricket. First developed in the mid-1800s, cricket has grown into one of the most popular sports in the world. It looks at the complicated and confusing rules behind the game and examines how the British Empire exported the game to its colonies including the West Indies and India. It also looks at different forms of the game including test cricket and Twenty20 cricket.
2018 • People
Scientists are working to understand and even slow the aging process.
2018 • Health
The female orgasm is more elusive when a man is involved. Discover the reasons why -- and how women are embracing hands-on solutions.
2018 • Health
Political correctness can sometimes feel like a tug-of-war between inclusivity and free speech. Experts discuss the concepts behind the fraught term.
2018 • People
Hillary Clinton and Anne-Marie Slaughter discuss the cultural norms at the center of the worldwide gender pay gap, including the "motherhood penalty"
2018 • Economics
The global water crisis is at an inflection point. How do we price our most valuable resource, while also ensuring access to it as a human right?
2018 • Environment
There are more billionaires than ever. But how does this vast accumulation of wealth affect the world?
2019 • Economics
What goes on inside an animal's mind? Figuring out how they think and feel might just be the key to understanding our own place in the world.
2019 • Nature
It began with bloomers. Then came spandex. Now we sport leggings and other activewear everywhere. How did comfy, casual clothing go mainstream?
2019 • Lifehack
Computer code now controls how we live. But how did these programming languages evolve? And how can they be used to build a new and better world?
2019 • Technology
(This episode is from before the outbreak of Covid-19 pandemic) - In this episode from 2019, experts including Bill Gates discuss the history of pandemics, how they spread and what could be done to contain them.
2019 • Health
The planet's current rate of meat consumption is unprecedented -- and becoming unsustainable. In the future, will meat alternatives be the answer?
2019 • Health
Oil led to huge advancements - and vast inequities. As the planet warms, why is it so hard to turn away from fossil fuels, and can it be done in time?
2021 • Environment
Over billions of years, planet Earth has become home to an amazing interdependent ecosystem, containing a dizzying variety of animals and plants. But how did life here begin? And does it exist anywhere outside of our solar system? We uncover the secrets of our world by tracking the evolution of the cosmos itself, from the Big Bang onwards. Follow scientists responsible for some of the major breakthroughs in understanding the origins of life and witness how their discoveries are fundamentally changing the way we perceive the universe.
2017 • Astronomy
Carl Sagan opens the program with a description of the cosmos and a "Spaceship of the Imagination" (shaped like a dandelion seed). The ship journeys through the universe's hundred billion galaxies, the Local Group, the Andromeda Galaxy, the Milky Way, the Orion Nebula, our Solar System, and finally the planet Earth. Eratosthenes' successful calculation of the circumference of Earth leads to a description of the ancient Library of Alexandria. Finally, the "Ages of Science" are described, before pulling back to the full span of the Cosmic Calendar. Note: This revised version of the series adds an introduction by Ann Druyan, in which she discusses some of the changes that occurred in the years after its broadcast.
1/13 • Cosmos: A Personal Voyage • 1980 • Astronomy
Today on Crash Course Astronomy, Phil invites you to head outside and take a look at all the incredible things you can see with your naked eye.
#2 • Crash Course Astronomy • Astronomy
Join Phil for a tour of our capital-M Moon, from surface features, inside to the core, and back in time to theories about its formation.
12 • Crash Course Astronomy • Astronomy
Flying through bad weather can be a harrowing experience, and for NASA, it can be doubly unnerving, as violent storms can strike from below the atmosphere or above it. Witness the true power of nature in space and on Earth as astronauts and ground crews battle to overcome the elements, including a severe lightning strike that crippled Apollo 12's computer system, the freezing temps that compromised the Space Shuttle Challenger, and the tempest of space debris that sent a dead satellite on a collision course with the International Space Station.
S1E5 • Space Disasters • 2020 • Astronomy
Astronomers study a lot of gorgeous things, but nebulae might be the most breathtakingly beautiful of them all. Nebulae are clouds of gas and dust in space. They can glow on their own or reflect light from nearby stars. When they glow it’s usually predominantly red from hydrogen and green from oxygen, and when they reflect and scatter light it’s from massive hot stars, so they look blue. Stars are born in some nebulae, and create new ones as they die. Some nebulae are small and dense, others can be dozens or hundreds of light years across.
36 • Crash Course Astronomy • 2015 • Astronomy