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Ancient Greece: Alexander the Great

Ancient Greece: Alexander the Great (1:41)

The Romans maintained and absorbed many aspects of the Grecian culture after they conquered it.

Ancient Greece: Socrates and Plato

Ancient Greece: Socrates and Plato (5:10)

This video examines the foundations of Greek philosophy and the basic teachings of Socrates and Plato.

Ancient Greece: About Alexander the Great

Ancient Greece: About Alexander the Great (9:00)

Learn how Alexander, reared on Greek philosophy, mythology and military training, became Western history's greatest conqueror and spread Greek culture around the world.

Alexander the Great: The Fate of the Empire

Alexander the Great: The Fate of the Empire (1:54)

Alexander died of malaria before he could conquer Arabia; with no clear successor, Alexander's empire crumbled.

Alexander the Great: The Spread of Hellenism

Alexander the Great: The Spread of Hellenism (1:50)

Alexander moved eastward, spreading Greek culture into Asia by establishing 10 cities.

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What the Ancients Knew: The Archimedes Screw

What the Ancients Knew: The Archimedes Screw (0:31)

On The Science Channel's "What the Ancient's Knew," learn about the Archimedes screw, an invention used by the Ancient Egyptians to draw water from the Nile River to irrigate their fields.

What the Ancients Knew: Archimedes on Force

What the Ancients Knew: Archimedes on Force (1:17)

Take a load off and examine Archimedes' principles of levers and pulleys in action. Find out how it works with host Jack Turner on The Science Channel's "What the Ancients Knew."

What the Ancients Knew: Thales

What the Ancients Knew: Thales (1:08)

Thales was an Ancient Greek philosopher who is considered the founder of natural science. Learn how he collected data on star and sun cycles in this video from The Science Channel's "What the Ancients Knew."

What the Ancients Knew: Pythagoras and Chords

What the Ancients Knew: Pythagoras and Chords (1:11)

Watch how Pythagoras' famous mono-chord experiment explains the music and math connection. Learn more with host Jack Turner on The Science Channel's "What the Ancients Knew" series.

Alexander the Great: The Fate of the Empire

Alexander the Great: The Fate of the Empire (1:54)

Alexander died of malaria before he could conquer Arabia; with no clear successor, Alexander's empire crumbled.

Alexander the Great: The Spread of Hellenism

Alexander the Great: The Spread of Hellenism (1:50)

Alexander moved eastward, spreading Greek culture into Asia by establishing 10 cities.

Alexander the Great: In the Heart of the Persian Empire

Alexander the Great: In the Heart of the Persian Empire (1:55)

Alexander led his forces into Babylon, gaining great wealth in the city of Persepolis, then set the city ablaze before leaving.

Alexander the Great: Darius Fights Alexander Again

Alexander the Great: Darius Fights Alexander Again (3:04)

Refusing Darius' offer of a truce, Alexander defeated the Persian troops again.

Alexander the Great: Marching Into Egypt

Alexander the Great: Marching Into Egypt (1:51)

Alexander liberated Egypt from the Persian Empire and was proclaimed pharaoh; Alexander built the city of Alexandria at the mouth of the Nile.

Alexander the Great: Alexander Fights the Persians

Alexander the Great: Alexander Fights the Persians (4:37)

Alexander defeated the Persians at the River Granicus and at Issus. King Darius fled, and Alexander took pity on Darius' family.