A plain language guide to copyright in the 21st century By Julien Hofman Computers and the Internet have transformed the way we produce and distribute information and entertainment. And copyright is struggling to keep pace with these changes. The authors of all kinds of works, from the humble email to blockbuster films, rely on copyright to protect what they produce. But authors and those who use their work are often unclear about what copyright allows and what it prohibits. This book was wri
Astrobiology Magazine is an online service that provides summaries of scientific articles relevant to astrobiology. Specific topics include microbiology, paleontology, astronomy, climate history, planetary studies and space technology. The website is updated daily and free to access, however users must register to use the site. Users may follow links to an image gallery, book reviews, and a downloadable bibliography of research articles on astrobiology.
Boston jobs for Boston residents
Christopher Lydon reports that Ray Flynn (Mayor of Boston) is requesting the creation of a Boston Employment Commission in order to boost the number of Boston residents working in Boston jobs. Lydon notes that the Flynn administration would like the Boston work force to be 10% female, 25% minority and 50% Boston residents. Lydon's report includes footage from an interview with Flynn about employment in Boston. Lydon reports that Flynn's proposed ordinance would change the demographics of the wor
RocketModeler was developed at the NASA Glenn Research Center in an effort to foster hands-on, inquiry-based learning in science and math. RocketModeler is a simulator that models the design and flight of a model rocket. The program works in two modes: Design Mode or Flight Mode. In the Design Mode, you can change design variables including the size of the rocket body, the fins, and the nose cone. You can also select different materials for each component. You can select from a variety of standa
Volcanic Clouds and the Atmosphere
The common plastic water bottle makes a useful container for demonstrating properties of gases and liquids. As typical examples, we know that “air” is a gas (made up of nitrogen, oxygen, water vapor, ozone, carbon dioxide, and several “trace” gases) and water is a liquid. We should also note that gases and liquids are both “fluids”. That is, they can flow or change shape, rather than having a fixed shape like a solid. So what happens when a water bottle is opened? Usually not much. W
EO Global Warming
Earth Expeditions: Global Warming has been designed to provide students with an interactive multimedia environment where they can learn about the causes and possible effects of the rise in concentrations of carbon dioxide in the atmosphere for more than a century. How will Earth’s environment be affected if this rise continues over the next century? The multimedia package provides background information about radiation from the Sun and Earth, the Earth’s energy balance, and the greenhouse ef
Earth Explorers Series
Who Are NASA's Earth Explorers? The elementary school student questioning if El Nino occurs anywhere besides the Pacific Ocean... The researcher investigating connections between Arctic ozone depletion and global climate change... The consumer comparing hydrocarbon versus hydrogen-powered cars... And the business person projecting future needs for harvest, delivery, and storage of crops... All of these people are Earth Explorers -- they are all connected by their curiosity about Earth system pro
21st Century Explorer
This site answers questions that include: Why do we want to travel to Mars? How would your body change in space? Where would a space explorer find water and oxygen? How can we travel faster in space? Student actors (on video) and hands-on activities are featured with each answer. The site is for Grades 3-5 and available in Spanish.
NASA Earth Observatory Mission: Biomes
This fun, interactive website was designed by NASA's earth observatory to introduce students to the Earth's Biomes. A biome, as defined by the site, is a community of plants and animals living together in a certain kind of climate. This website provides links to seven different biomes that students can learn about including coniferous forests, grasslands, and tundras. Each separate biome page contains a brief general description as well as basic information about characteristics such as Temperat
Morphing : can you turn a frown into a smile?
This online challenge activity offers students a look into the world of computer animation. It features a simplified explanation of how one image can be transformed into another image using digitization and explains the mathematics concept of the average. The activity is one of 80 mathematical challenges featured on the Figure This! web site, where real-world uses of mathematics are emphasized. Related questions ask students to consider other situations that require the use of percentages to mea
I win! : she always wins, it's not fair!
In this activity, students play a game and examine what it means for a game to be fair. The activity is part of the Figure This! collection of 80 online mathematical challenges emphasizing real world uses of mathematics. In the game's 12 rounds, two six-sided die are rolled, the face values are subtracted, and data are recorded on a table. Player A wins if the difference is 0, 1, or 2, and Player B wins when the difference is 3, 4, or 5. The page contains a solution hint, the solution, and relat
A First Course in Linear Algebra
A First Course in Linear Algebra is an introductory textbook aimed at college-level sophomores and juniors. Typically such a student will have taken calculus, but this is not a prerequisite. The book begins with systems of linear equations, then covers matrix algebra, before taking up finite-dimensional vector spaces in full generality. The final chapter covers matrix representations of linear transformations, through diagonalization, change of basis and Jordan canonical form. Along the way, det
Dynamic Remodeling of Individual Nucleosomes Across a Eukaryotic Genome in Response to Transcription
The eukaryotic genome is packaged as chromatin with nucleosomes comprising its basic structural unit, but the detailed structure of chromatin and its dynamic remodeling in terms of individual nucleosome positions has not been completely defined experimentally for any genome. We used ultra-high–throughput sequencing to map the remodeling of individual nucleosomes throughout the yeast genome before and after a physiological perturbation that causes genome-wide transcriptional changes. Nearly 80%
Make a Moon Flipbook
This OLogy activity provides insight into the phases of the Moon and why it looks a little different each night. The activity begins with an explanation about how the Moon itself doesn't really change, just our view of it. Then kids go to "See the Moon in Action," an interactive illustration of the Moon's orbit around the Earth, in which they can see what the Moon looks like from Earth at eight different positions in its orbit. The activity ends with a Moon Watch Log, a printable PDF file, that
DNA in a Blender
This simple OLogy experiment provides insight into genetics by allowing kids to see and hold real DNA. The activity begins with an explanation about how the Moon, itself, doesn't really change, just our view of it. Then kids go to "See the Moon in Action," an interactive illustration of the Moon's orbit around the Earth, where they can see what the Moon looks like from Earth at eight different positions in its orbit. The activity ends with a Moon Watch Log, a printable PDF file, that kids use to
This NASA site explains the three major types of atmospheric aerosols - volcanic emissions, desert dust, and anthropogenic aerosols - and how they affect global climate. The site discusses the generation and atmospheric distribution of these aerosols, as well as the chemical and physical processes by which they create global cooling.
This site features Java Applet, QuickTime, and Flash animations that illustrate characteristics and functions of the atmosphere. They show how atmospheric temperature, pressure, and density change with respect to changing altitude, the way different kinds of radiation (x-ray, ultraviolet, visible, and infrared) act in various levels of the atmosphere (troposphere, stratosphere, mesosphere, and thermosphere/ionosphere), how oxygen gas and chlorofluorocarbons (CFCs) interact with ultraviolet radia
Stereotypes of the French
This unit comprises four major lessons which are distinct yet cumulative. In the first lesson, the students will lay the groundwork for their examination of French stereotypes by generating those stereotypes themselves. They may draw, write, or find examples of what they think are "typical" French things. In the second lesson, they will be required to change perspective -- instead of being the examiners, they will be the examined culture. Students will look at various examples of stereotypes of
Doing the Decades, 1890-1941: Group Investigations in Twentieth Century U.S. History
This is a two-month team research project for 9-10th graders that uses Library of Congress resources to focus on long-term change in U.S. history. Students gather, analyze, and evaluate primary and secondary sources; develop their own conclusions; and refine their writing.
Uncertainty, Lags and Nonlinearity: Challenges to Governance in a Turbulent World
Prof. Homer-Dixon looks at systems displaying high levels of uncertainty. Using the example of climate change, he asks whether standard "management" approaches used by policymakers are enough or if we must find new approaches in times of uncertainty. Global financial, climate, energy, and food challenges exhibit similar characteristics - all emerge from systems exhibiting high levels of uncertainty, countless unknown unknowns, time lags, threshold effects, occasional chaotic behavior, and someti