Image of Copmuter Code on Screen
Science

Computer Programming: Understanding Variables

August 25, 2017

The leap from traditional calculators to the power of computer programming begins when we turn to variables, operations with variables, and input/output commands. When we combine variables with other operations or input/output commands, we get statements that let the computer do virtually everything we regard as impressive. […]

Image of Roses
Science

Will Flowering Plants Take Over the World?

July 17, 2017

Flowering plants arrived relatively late in geological time, between 290 to 145 million years ago. But once here, they evolved quickly and often displaced many other types of plants. In fact, in terms of species, flowering plants are the dominant plant form on Earth today with more than 300,000 types. Learn how their unique reproductive mechanisms led to this explosion of speciation in such a relatively short time.
[…]

image of scroll with Egyptian hieroglyphs
Ancient History

Decoding the Secrets of Egyptian Hieroglyphs

June 30, 2017

Ancient Egyptian civilization is undoubtedly one of the most fascinating chapters in human history. While remnants of the culture like temples, obelisks, and sarcophagi continue to mystify us, you can unlock their true meaning if you know how to read hieroglyphs. […]

image of multiplication table
Applied Math

A Cool New Way to Grasp Basic Multiplication

June 28, 2017

In this lecture from The Power of Mathematical Visualization, professor James Tanton teaches intriguing new ways to perform basic multiplication — methods that teach you to visualize numbers in a whole new light. […]

image of the eagle nebula by the hubble telescope
Astronomy

Hubble Images—Exploring the Birthplace of Stars

June 27, 2017

Among the incredible Hubble cloud images, none has been received with greater public acclaim than the detailed 1995 snapshot of newborn stars emerging from giant pillars of gas and dust inside the Eagle Nebula. This image looks like a fantasy landscape out of a dream or a children’s story. Get ready to explore this image in the context of galactic interstellar clouds, the process of star formation, and the impact of young stars on their interstellar environments. […]

Communication

What Did the Ancient Greek Language Sound Like?

June 26, 2017

The Ancient Greek language is a language like no other. It records an astonishing array of great works in different genres, stretching across a thousand years of history. Watch lecture 1 from the series Greek 101: Learning an Ancient Language, and you’ll learn the 24 letters of the Greek alphabet using the restored classical pronunciation. […]

European History

The Ukraine-Russia Crisis Explained

June 24, 2017

Survey the recent crisis in Ukraine and see how the origins of this conflict stem from the last hundred years of the region’s history, which is rife with skirmishes and shifting borders. After providing the historical context, Professor Liulevicius explains the ins and outs of the current crisis, including ethnic divisions within Ukraine and Russia’s attitude toward former Soviet territory. […]

1 2 3 4 5