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The birth of South Sudan
South Sudan faces the trials of nation building. An expert on Sudan explains the expectations and challenges ahead
Author(s): The Economist

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Europe's crisis takes a bad turn
As Italy wobbles, politicians and central bankers begin a summer of painful negotiations
Author(s): The Economist

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Asafa Powell and Jamaican sprint team win 4x100 then sign and pose for media at Penn Relays
Asafa Powell, Michael Frater, Nesta Carter, Steve Mullings run and win for Jamaica in the 4x100 meter dash at the Penn Relays on April 30, 2011. After winning, they run off the track and pose for media and fans. This is the behind the scenes footage. Shot by Kurtis Sensenig, University of Pennsylvania
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Erythemal Index for August 2000 through July 2001: Zoom to North America
The Erythemal Index is a measure of ultraviolet radiation (UV) at ground level on the Earth. UV exists to the left of the visible spectrum and is divided into three components (UV-A, UV-B and UV-C). UV-B (290-320 wavelengths) is the most dangerous form of UV radiation that can reach ground level. Atmospheric ozone shields life at the surface from most of the harmful components of solar radiation. Chemical processes in the atmosphere can effect the level of protection provided by the ozone in the
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Force and Motion -- Introduction
Richard Baldwin
This module introduces force and motion in a format that is accessible to blind students.
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Editing Module Files
Connexions
This module explains how to upload associated files to a module.
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On Location
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3.6 Moon38: Apollo 12 station 5

Two of the frames show Al Bean carrying the Apollo Lunar Surface Experiments Package (ALSEP) packages out from the Lunar Module. (QuickTime, 500KB, note: this may take some time to download depending on your connection speed)

Southern School Desegregation 1957-1962: Interviews
This 3:28 long video features Jefferson Thomas, one of the "Little Rock Nine," narrating what it felt like to be the first black students at Little Rock's Central High School. The video shows white mobs, paratroopers patrolling the streets, and soldiers escorting black students into Central High School. Elizabeth Eckford, another of the nine pioneering students, describes the treatment she received, while footage of the crowds around her is shown. This is an exceptional video to show students ab
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The Money Masters, 2/2
This is a lengthysecond episode of Part 1 of the YouTube video (01:46:21) that discusses the U.S. debt and the U.S. Banking system. There are some controversial statements in this video. This information would have be clarified by a high school economics instructor.
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The Ascent of Money by Niall Ferguson, Part 1 of 2
This is the documentary by the famed professor Niall Ferguson. In this series, he discusses why money has become such a part of our lives. (Four hours and 15 minutes.)
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Replication Origin and Ends - Regulation Fall 2007
General Biochemistry and Molecular Biology - Fall 2007. Molecular biology of prokaryotic and eukaryotic cells and their viruses. Mechanisms of DNA replication, transcription, translation. Structure of genes and chromosomes. Regulation of gene expression. Biochemical processes and principles in membrane structure and function, intracellular trafficking and subcellular compartmentation, cytoskeletal architecture, nucleocytoplasmic transport, signal transduction mechanisms, and cell cycle control.
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SFAP 2011 – L’utilisation des opioïdes et des benzodiazépines avant l’admission en soins pal

Titre : SFAP 2011 – L’utilisation des opioïdes et des benzodiazépines selon le milieu de vie avant l’admission en soins palliatifs
Auteur(s) : F. TARDIF (coordonnateur équipe de recherche – Québec – Canada).
Etablissement : Centre de Recherche en Cancérologie
Résumé : Les patients atteints de cancer avancé expriment le souhait de prolonger le temps passé à domicile avant leur admission en unité de soins palliatifs pour la phase terminale. Cependant, il
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The Central Dogma - DNA, RNA Information Flow - (DNA, mRNA, tRNA)
This is a general introduction to cell structure and function, molecular and organism genetics, animal development, form and function. Intended for biological sciences majors, but open to all qualified students.
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The physics of musics: Standing waves in string instruments
Free High School Science Texts Project

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Vectors: Introduction and key concepts (Grade 11)
Free High School Science Texts Project

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Look It Up
This video segment from Between the Lions features a catchy song that celebrates an important function of literacy: access to information. It also shows the wide world of print, and all of the knowledge that can be gained from it.
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Predicting Earthquakes
This video segment, adapted from QUEST, describes the extraordinary research that scientists are doing to help demystify and possibly better predict earthquakes.
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Garden of Eating
Students are asked how poor weather conditions affect the cost of fruits and vegetables.
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Testing Intelligence
In this video segment from Nature, scientific experiments test how ravens think.
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