A Crisis in Human Rights: Genocide in Darfur and Beyond
Focusing on the crisis in Darfur, the speakers will offer a comprehensive view of how and why a conflict evolves into a full-fledged genocide. The Darfur genocide has involved not just the outright immediate killing of people, but also the creation of conditions that have made life impossible by chasing people out into the desert and destroying their homes, villages, food supplies and livelihoods. Speakers will present eyewitness accounts of events on the ground in Darfur as well as academic res
Assessing the Biological Weapons and Bioterrorism Threat
BIOSECURITY FOR A NEW ERA Lecture Series Biological weapons (BW) have been a significant national security preoccupation for nearly 15 years. The events of September 11 and the anthrax attacks that followed have magnified these concerns by orders of magnitude while shifting the context almost entirely to "bioterrorism." Over the past four years, the federal government has spent nearly $30 billion to counter the anticipated threat. Strangely, these responses took place in the absence of virtuall
NASA CONNECT Better Health from Space to Earth
In NASA CONNECT Better Health From Space to Earth, students will learn about the importance of good nutrition and exercise. They will investigate what we can learn in space about our bodies here on Earth. Students will see how researchers and scientists apply the mathematics concepts of measurement and estimation to study the loss of calcium in bones and the loss of muscle mass while astronauts are living and working in space. Grades 6-8.
Exploring the Table of Isotopes
The following information will help you understand the Periodic Table of the Isotopes. Elements: Each element has a fixed number of positively charged protons in its nucleus and an equal number of electrons orbiting the nucleus. For example, hydrogen (H) has one proton and one electron, but lead (Pb) has 82 protons and 82 electrons. There are about 115 known elements of which 82 are naturally abundant. Isotopes: The nucleus contains both protons and neutrons. An element has a fixed number of
The Gold Rush, positive for California in so many ways, had a devastating effect on the state's environment. Many of these problems were directly related to gold-mining technology. The process of hydraulic mining, which became popular in the 1850s, caused irreparable environmental destruction. Two images show California's largest hydraulic mine ? Malakoff Diggings, in Nevada County ? in action. (Malakoff Diggings is now a state park and open to visitors.) Dams (such as the English Dam in Nevada
By the late 1960s, despite the ongoing Civil Rights movement, frustration over poverty, discrimination, injustice, and high unemployment among African Americans helped fuel unrest in many poor, black urban areas. On August 11, 1965, sparked by an angry confrontation between a white police officer and an African American motorcyclist, the Watts neighborhood in Los Angeles erupted in a large-scale civil disorder that lasted for six days and became known as the Watts Riots. Thirty-four people were
Dilemmas and Debates in Entrepreneurship
This is a course about dilemmas and debates. A dilemma is "an argument presenting two or more equally conclusive alternatives; a choice or a situation involving choice between equally unsatisfactory alternatives; a problem seemingly incapable of a satisfactory solution". The process of entrepreneurship involves the recognition of challenges and dilemmas, vigorous debate, and ultimately, solutions. No solution lasts long in an entrepreneurial milieu whose underpinning is "creative destruction". Y
Schools Demining Schools
Land mines are silent, secret weapons. They have been placed in over 60 countries around the world. In this web site, you can learn about these dangerous weapons and how you can help make the world safe from land mines.
Social Attitudes and Public Opinion
This course examines the nature of attitudes, beliefs, and values, and the influences which indiviudals' attitudes have upon their behavior. Various theories of attitude organization and attitude change are discussed, and the development of social attitudes is explored by examining the differential impact of the family, the educational system, the mass media, and the general social environment. The changing content of public opinion over time and its relationship to the political system are also
Calculate the Top Quark Mass
Students use conservation of momentum to calculate the mass of the top quark. This activity examines the fingerprint of a top/antitop production that took place in the D-Zero Detector at Fermilab on July 9, 1995. This activity will build on student understanding of vector addition and depends upon only a small amount of particle physics explanation.
Volcanoes are big movers and shakers in the business of continually redesigning the Earth's landscape. With no concern for nearby people or ecosystems, volcanoes release toxic gases, climate-altering ash, lava and rock. How does this work? Are scientists getting better at predicting volcanic eruptions? How do areas recover after destruction?
Calculating Molecular Weight
The molecular weight is the mass of one mole of a substance. Usually, the units used for this are grams per mole. In this movie, we show how to calculate the molecular weight of a substance from the atomic weights given on the periodic table. On another page, we use the molecular weight to convert between the macroscopic scale (grams of a substance) and the microscopic scale (number of molecules of that substance).
Mixed Reception Scenario
This activity is set in a research group that is developing an antivenom for spider bites. In the opening scene, Nelson Pogline, a talented graduate student, dies unexpectedly at a university reception. As a detective, you must use chemistry concepts to determine if this was murder and if so, solve the case. You can interview suspects using Quicktime movies, investigate the crime scene for clues with Quicktime Virtual Reality images, and analyze the evidence from the crime lab. This activity req
Body With Thruster Model
The Body with Thruster Model shows the motion of a disk with an attached rocket engine. You can drag the engine to change its distance from the center of the disk and you can adjust the thrust of the rocket engine using sliders. The mass of the rocket and its connecting rod are assumed to be negligible. The trajectory of this single-body model is intuitively challenging and difficult to visualize.
Lennard-Jones Potential Model
The EJS Lennard-Jones Potential model shows the dynamics of a particle of mass m within this potential. You can drag particle to change its position and you can drag the energy-line to change its total energy. The Lennard-Jones potential function is a reasonably accurate model of interactions between noble gas atoms. The binding energy epsilon is the depth of the potential well and minimum molecular separation are set equal to unity. This simulation uses uses a natural system of units the m
Anisotropic Oscillator Model
The EJS Anisotropic Oscillator model displays the dynamics of a mass connected to two opposing springs. The simulation displays the motion of the mass as well as the trajectory plot. The initial position of the mass can be changed by dragging. The unstretched lengths of the springs can changed as well via textboxes.
Peace Games: Peace Dove
Play a game and find out about a Nobel Prize awarded discovery or work! Several people and organizations have received the Nobel Peace Prize for their efforts concerning nuclear weapons disarmament. Worldwide, the white dove is a symbol for peace. Take on the mission to disarm the world of nuclear weapons! ...
Letters From the Diaspora - Writing Letters From the Perspective of a Historic Migrant
In this lesson, students share opinions about the causes of mass migration. They then investigate the causes and effects of an event that led to a mass migration, and write letters from the perspective of a person who might have lived through that period.
Pioneer Life With Laura
Through literature, both fiction and nonfiction, the learner will develop an understanding of and an appreciation for: Why pioneers left their homes and families to journey west; The hardships pioneers faced on the journey and as they built a new life on the frontier; Family life on the frontier; Building a community; Destruction of the way of life of the Plains Indians and their forced movement to reservations; Effects the pioneers had on the natural environment.
The fastest CME of Cycle 23 overtakes another fast CME
On November 4, 2003, the Sun produced its fastest coronal mass ejection (CME) for cycle 23 out of the active region 0486 located near the southwest limb of the Sun. The CME was expelled with a speed of approximately 2700 km-s. At the time of the launch of this CME, there was another ejection in progress ...