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Industrial Revelations: Triple Expansion Engine

On Discovery Channel's "Industrial Revelations," host Mark Williams describes how the triple expansion high-pressure steam engine works. We also learn how it helped spread the use of electricity.


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History of Sun with Scott McNealy

History of Sun with Scott McNealy (9:06)

Watch this video about the history of Sun Microsystems on HowStuffWorks. Founded in 1982 and led throughout its history by the guiding principle "The Network is the Computer," Sun has pioneered an abundance of technologies that have helped customers... More »

Project Mercury Missions

Project Mercury Missions (2:22)

Watch this video about NASA on HowStuffWorks. Segment three goes into detail on how Project Mercury Missions worked. See how Project Mercury Missions worked in this video from NASA.

History of the Vikings and Navigation

History of the Vikings and Navigation (5:31)

Watch this video about how the vikings navigated the Atlantic Ocean on HowStuffWorks. This is the third segment of NASA Sci Files "The Case of the Technical Knockout" explaining how the vikings navigated the Atlantic Ocean without the use of modern... More »

Free Speech During War Time

Free Speech During War Time (4:47)

Watch this video about free speech on HowStuffWorks. University of Chicago law professor Geoffrey R. Stone discusses his book, which recounts our nation's long history of limiting free speech and civil liberties in times of crisis. Copyright 2004... More »

The Chicago Judges Project

The Chicago Judges Project (4:50)

Watch this video about the voting record trends of federal judges on HowStuffWorks. Are votes of federal judges predictable from their ideology? University of Chicago law professor Cass R. Sunstein discusses judicial behavior on federal courts,... More »

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Unsolved History: Pickett's Charge Controversy

Unsolved History: Pickett's Charge Controversy (2:07)

This clip from Discovery Channel's "Unsolved History," examines the controversy regarding the High Water Mark of Pickett's Charge in the Battle of Gettysburg.

Unsolved History: Loading a Musket

Unsolved History: Loading a Musket (1:26)

In this clip from Discovery Channel's "Unsolved History" a civil war expert demonstrates how to load a musket.

Unsolved History: Lee's Long Shot

Unsolved History: Lee's Long Shot (3:01)

This clip from Discovery Channel's "Unsolved History" examines the factors that gave General Robert E. Lee confidence that he could defeat the Union in the Battle of Gettysburg.

Unsolved History: Gettysburg Terrain

Unsolved History: Gettysburg Terrain (2:28)

Could the battleground terrain have played a role in the outcome of the Battle of Gettysburg? This clip from Discovery Channel's "Unsolved History" examines the evidence.

Unsolved History: Gettysburg Graves

Unsolved History: Gettysburg Graves (1:22)

In an attempt to quantify the number of Confederate casualties at the Battle of Gettysburg, this clip from Discovery Channel's "Unsolved History" examines battleground burial sites.

Unsolved History: Gettysburg Cannon

Unsolved History: Gettysburg Cannon (1:27)

The devastating effects of cannon warfare during Pickett's Charge is highlighted in this clip from Discovery Channel's "Unsolved History."

Unsolved History: Emmitsburg Fence Barrier

Unsolved History: Emmitsburg Fence Barrier (2:27)

This clip from Disocvery Channel's "Unsolved History" examines how the Emmitsburg fence could have influenced the outcome of the Battle of Gettysburg.

Unsolved History: Elliot's Gettysburg Map

Unsolved History: Elliot's Gettysburg Map (2:35)

Can a map help explain the reason behind the Confederacy's crushing defeat at the Battle of Gettysburg? This clip from Discovery Channel's "Unsolved History" offers compelling insight.

Unsolved History: Confederate Misfortunes

Unsolved History: Confederate Misfortunes (1:40)

This clip from Discovery Channel's "Unsolved History" highlights a number of factors that led to the defeat of the Confederate Army at the Battle of Gettysburg.

Unsolved History: Civil War Turning Point

Unsolved History: Civil War Turning Point (2:13)

This clip from Discovery Channel's "Unsolved History" offers insight about how Pickett's Charge reversed the fates of both the Union and Confederate armies during the Civil War.