Why frogs are disappearing and how you can help
Amphibians face a mass extinction. Why? How can you help? Here's Kevin Zippel from Amphibian Ark explaining it all.  In this video, Mr. Zippel speaks to an audience passionately on this topic.  He also shows slides of a variety of these endangered amphibians.
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Biodiversity
With current extinction rates exceeding those of previous mass extinctions, many biodi versity studies focus on efforts to count the Earth’s species before they are lost. This session explores current field experiments studying complex ecosystems and how environmental and biodiversity changes might affect their functions.
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Apollo: Reflections and Lessons
In this first of three AeroAstro symposium events to mark the 40th anniversary of the moon landing, an extraordinary cast of luminaries recount the parts they played in the Apollo program, and celebrate MIT’s unique role in getting humans to the moon.

Theodore Sorensen believes President Kennedy chose him t

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Volcanic Collapse- Mega Tsunami - BBC
Scientists discover how huge blocks of volcanic rock can slide off a land mass into the ocean through heat and water pressure.
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Count Nouns and Mass Nouns (Countable and Uncountable Nouns).
Yossarian the Grammarian explains the difference between two kinds
of nouns, mass nouns and count nouns.  He explain when it is appropriate to use "amount of" instead of "number of," "less" instead of "fewer," and "many" instead of "much."

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First Revolutionary Battle at Lexington and Concord : Shot Heard Around the World
In April 1775, when British troops are sent to confiscate colonial weapons, they run into an untrained and angry militia. This ragtag army defeats 700 British soldiers and the surprise victory bolsters their confidence for the war ahead. Best used with a map of the area and a timeline of events. Also, the reading of The Ride of Paul Revere might be interesting.
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The War in 1812
While Republicans, for the most part, still backed Jefferson's foreign policies, new elections were transforming the party. Older politicians who molded the Republican Party policy and put Jefferson and Madison in power were replaced by daring young go-getters, such as Henry Clay of Kentucky, who were intent on defending America's honor. These new leaders, called "War Hawks" by their Federalist opponents, were the primary force behind Madison's decision to call for war with Britain. The War Hawk
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The Proclamation of 1763
The British victory opened new territory for exploration and expansion, but it also brought the responsibility for overseeing three troublesome groups. The first were thousands of resentful former French subjects. French settlements remained in Canada and even today the French are a prominent minority in Quebec and Montreal. To keep the settlements under control, the British maintained a close watch and employed harsh tactics to quell rebellion. One tactic was mass deportation of former French c
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Hitler's Germany 1935-36 - Documentary
The video shows original footage. There is a description of the main characteristics of the domestic policies. Hitler's youth are shown and what role boys and girls had. Unemployment fell. Industry grew but this was design for re-armament. There are images of parades of military tanks and weapons. The role of propaganda is stated. The Nazi attacked Jews and their properties. there was systema persecution. Books of the time showed the jews were not accepted. Trade unions were abolished. In 1936 t
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The History Of Christmas- Christmas Unwrapped Part 5 of 5
Part 5 of 5 People all over the world celebrate the birth of Christ on December 25th. But why is the Nativity marked by gift giving, and was He really born on that day? And just where did the Christmas tree come from? Take an enchanting tour through the history of this beloved holiday and trace the origins of its enduring traditions. Journey back to the earliest celebrations when the infant religion embraced pagan solstice festivals like the Roman Saturnalia and turned them into a commemoration
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The Vikings 2/5 – History Channel Documentary
The video shows how Vikings prepared their armies. The main weapons and described and shown. It describes the attack on the British monasteries. There is a representation of the terrible attacks, plunder and slaughter.
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AFL vs. CIO split in 1935
Organized labor began to grow rapidly during the Great Depression. The growth and expansion into "mass production" industries brought in unskilled and semi-skilled laborers. This vintage video reports about how the two unions formed separately, led by John Lewis.
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Accelerated motion in one dimension
The nature of acceleration is determined by the net external force for constant mass system. Depending on the nature of force, there exists wide range of possibilities like zero, constant or varying accelerations in one dimensional motion.
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Textiles - Mass Production
This video (02:30) shows the process of mass production, demonstrating how each worker is responsible for a specific task.

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Andrew Hargadon - Mass Production
This video is done in a lecture-style format that discusses the processes of mass production and why that innovation was so important. Slides and film are included.

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Putting Together the Pieces of the Universe

"Putting Together the Pieces of the Universe"

A lecture delivered by UCI Professor James Bullock on February 11, 2009. James Bullock, Associate Professor of Physics and Astronomy at UC Irvine, is part of a team of scientists who believe they have discovered the minimum mass for galaxies in the universe -- 10 million times the mass of the sun. This mass could be the smallest known "building block" of the mysterious, invisible substance called dark matter. Stars that form within these b
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JS Bach pt.4
 J.S.Bach occupies a pivotal place in the history of music.His compositions reprensents both the height of the Baropue and the beginning of the Modern Age of music .Filmed in Leipzig,London and America,this documentary both fascinating anf authoritative features specialy-filmed extracts with Jonh Eliot Grandiner conducting the Monteverdi Choir and English Baropue Soloists, performing the Mass in B minor,Andras Schiff playing the GoldBERG variations,Jacques Loussier improvising on the Toccata an
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JS Bach pt.5
 J.S.Bach occupies a pivotal place in the history of music.His compositions reprensents both the height of the Baropue and the beginning of the Modern Age of music .Filmed in Leipzig,London and America,this documentary both fascinating anf authoritative features specialy-filmed extracts with Jonh Eliot Grandiner conducting the Monteverdi Choir and English Baropue Soloists, performing the Mass in B minor,Andras Schiff playing the GoldBERG variations,Jacques Loussier improvising on the Toccata an
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Bach pt.6
J.S.Bach occupies a pivotal place in the history of music.His compositions reprensents both the height of the Baropue and the beginning of the Modern Age of music .Filmed in Leipzig,London and America,this documentary both fascinating anf authoritative features specialy-filmed extracts with Jonh Eliot Grandiner conducting the Monteverdi Choir and English Baropue Soloists, performing the Mass in B minor,Andras Schiff playing the GoldBERG variations,Jacques Loussier improvising on the Toccata and
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JS Bach pt.7
J.S.Bach occupies a pivotal place in the history of music.His compositions reprensents both the height of the Baropue and the beginning of the Modern Age of music .Filmed in Leipzig,London and America,this documentary both fascinating anf authoritative features specialy-filmed extracts with Jonh Eliot Grandiner conducting the Monteverdi Choir and English Baropue Soloists, performing the Mass in B minor,Andras Schiff playing the GoldBERG variations,Jacques Loussier improvising on the Toccata and
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