Exactly when and where did life on Earth begin? Scientists have long thought that it emerged three billion years ago in the ocean -- until astrobiologist Tara Djokic and her team made an unexpected discovery in the western Australian...

As a young girl, photojournalist and TED Fellow Kitra Cahana dreamed about running away from home to live freely on the road. Now as an adult and self-proclaimed vagabond, she follows modern nomads into their homes -- boxcars, bus stops,...

A naked singularity is something that should be a black hole, but it’s neither black nor a hole. If they exist, they’ll rewrite physics as we know it.

Legendary scientist David Deutsch puts theoretical physics on the back burner to discuss a more urgent matter: the survival of our species. The first step toward solving global warming, he says, is to admit that we have a problem.

Today we transition between units on language and aesthetics with a discussion of nonexistent and imaginary objects. Is it possible to make true assertions about things that aren’t real? We’ll explore Meinong’s Jungle and the concept of...

We all know it's awesome, and we could watch Chris Hadfield sing all day, but do you know about the awesome science that's being done on the International Space Station? Hank explains three big discoveries made on the ISS that you should...

Our unit on the philosophy of religion and the existence of god continues with Thomas Aquinas. Today, we consider his first four arguments: the cosmological arguments.

For six months, Suki Kim worked as an English teacher at an elite school for North Korea's future leaders -- while writing a book on one of the world's most repressive regimes. As she helped her students grapple with concepts like...

There was a massive data breach in the United States, and chances are you're probably affected by it. While Hank can't undo what was done, he can give you some insight into how it all went down.

What Is The Universe

Last week we introduced Thomas Aquinas’s four cosmological arguments for the existence of god; today we introduce his fifth argument: the teleological argument, and the ensuing dialogue it initiated.

Now that we’ve left behind the philosophy of religion, it’s time to start exploring what other ways might exist to find meaning in the world. Today we explore essentialism and its response: existentialism. We’ll also learn about...

Image-maker Alexander Tsiaras shares a powerful medical visualization, showing human development from conception to birth and beyond. (Some graphic images.)

They were the first giants of the cosmos, and now they're gone. The James Webb Space Telescope has found evidence of ancient stars so massive and hot they defy belief. Join scientists as they piece together the clues from these...

Songs of Innocence and of Experience by William Blake is a poetic masterpiece that delves into the contrasting states of the human soul. Through two collections published in 1789 and 1794, Blake explores themes of innocence and...

Many say that the waters of America’s Northern coasts are home to an elusive sea serpent of legend. Named Caddy! Or Cadborosaurus, for long. Sightings and testimonials go back generations. Who is Caddy? And why are serpentine water...

Why existence? Why is there something rather than nothing? Why are we even here at all.We know a lot about the “how” and the “What” of our existence, but we don’t know much about the “why” of our...

Howcast -Learn how to read the Judgment tarot card from expert Ellen Goldberg, M.A. in this Howcast video.

What is ERG Theory?

What is Physical Evidence within the Marketing Mix? Physical evidence is everything your customers see when interacting with your business. This includes the environment where you provide your product or service (either physical or...

What are Manufacturing Functions? Functions related to manufacturing operations may include the design and development of production lines, purchasing raw materials and components, selection of raw material suppliers and subcontractors,...

What is a Liqudiation Preference? How does a liquidation preference affect follow-ong financing rounds of equity investment? A liquidation preference provision determines the order in which investors get paid back after a liquidity...

Promoter Liability

What are the Steps in the Incorporation Process? Incorporation generally entails filing the articles of incorporation, naming a registered agent, and receiving the charter or certificate or incorporation.