In Colchis, the hide of a mystical flying ram hangs from the tallest oak, guarded by a dragon who never sleeps. The only way Jason can pry it from King Aeetes' clutches and win back his promised throne is by facing three perilous tasks—...

Paul Andersen explains how organisms regulate timing and control. Phototropism and Photoperiodism allow plants to respond to light throughout the day and year. Circadian rhythms are used in all organisms (including animals) as an...

Paul Andersen explains how plants use hormones to respond to their environment. The following hormones are detailed; auxin, cytokinins, gibberelins, abscisic acid and ethylene.

Dr. Forrester talks about many of the hardships pioneers faced as they migrated into the western part of the United States.

This video examines the etymology and symbolic use of the word "yoke." The video highlights how Romans used the yoke as a symbol of subjugation when conquering new territories, illustrating the transfer of this concept into modern...

Why would a poet use ambiguity? What do I do if I can't figure out what an image means? How come these words are haunting my dreams? All of these questions and more are addressed in this reading, summary, and analysis of Louis Gluck's...

A day does not go by without using simple machines. This program explores the six major types of simple machines with practical, colorful examples of each. Vivid video footage illustrates how each of the following simple machines works...

How Hannibal with his army fell into an ambush and how in unusual way they got out. Will Fabius Maximus - a Roman dictator stop his plan? The Second Punic War is also full of fascinating episodes.

This video looks at place names and their Saxon origins, like the word 'bury' meaning fortified place which lends its name to Banbury, Shaftsbury, Salisbury.  It also covers some county name origins like Essex coming from the East Saxons.

Can we rethink the way buildings use energy? John Ochsendorf, an Associate Professor of Civil and Environmental Engineering and Architecture at MIT, is working with his students to change the way buildings are made and how they consume...

When you hear the name "Captain Morgan," images of bros posing with a handle of spiced rum with one foot danging precariously in the air probably come to mind. While there were plenty of pirates whose reputations were built on boozin' it...

We discuss the cupola of the Santa Maria del Fiore, and Brunelleschi's many inventions along the way. Genius is a word often thrown around, but rarely is it more appropriate than here.

Harriet Tubman was born into slavery in Maryland. She escaped and came back to lead hundreds of enslaved people to New York and Canada along the route of the Underground Railroad. She was also a spy for the United States Army during the...

Plant Physiology and Chemistry Set: 5. This clip explains

This video provides a comprehensive lesson on plural nouns. It explains the different types of regular plural nouns and how to form them by adding -s, -es, or -ies to the end of the singular noun. It also covers irregular plural nouns...

We've gone over the various tiers of structure of a plant, from cells, to tissues, to organs and organ systems. Now it's time to better understand how plants grow. How to plants know when to grow? How do they know which direction to...

Toronto photographer Nicole Simone captures images of rescue dogs with their new owners

Al Jazeera meets the Ethiopian farmers turning to traditional methods to ease a food crisis that has left 20 million people dependent on aid

Part 9 of Aux Quatre coins du Monde avec Lowell Thomas / Going Places with Lowell Thomas. Re-enactment of a rite in Mali, where a young man gives himself to a clan and becomes a full member. The young bride getting ready. Second...

Named after Achaimenes, the legendary leader of the great Persian migration around 701 B.C., where the Kings of the Achaemenid dynasty were generous sponsors of Art and Architecture. Slowly but surely the result was a heterogeneous...