Should NASA invest nearly a million dollars in an obscure Russian scientist's antigravity machine (it has failed every test and would violate the most fundamental laws of nature)? Should the Patent and Trademark Office have issued Patent 6,362,718 for a physically impossible motionless electromagnetic generator (which is supposed to snatch free energy from a vacuum)? There is, alas, no scientific claim so preposterous that a scientist cannot be found to vouch for it. And many such claims end up in a court of law after they have cost some gullible person or corporation a lot of money. How are juries to evaluate them? How can you recognize questionable scientific claims? What are the warning signs of fraud? Here are seven indicators that a scientific claim lies well outside the bounds of rational scientific discourse. Of course, they are only warning signs -- even a claim with several of the signs could be legitimate.

Having problems putting together your ACR submission? Acquiring the phantom images? We can help. All You really need to know about MRI Physics: One of the most popular textbooks for those looking for an introduction to MRI Physics. Great for technologists and Radiology residents, application speciallists and service engineers. Introduction to MRI - A Shockwave Movie: View a colorful, animated introduction to the basic principles of MRI. Protons and vectors that spin and dephase in 3 dimensions. Really Cool!

The Simpsons has established itself as an award-winning international pop culture phenomenon. It is the longest-running sitcom of all time and it is also one of the most literate television programs on the air, containing many references to subject matter and scholars from various academic fields, including mathematics. Since The Simpsons has been airing in prime-time for most of our students' lives, they likely are familiar with the program and its large cast of characters, including a resident mathematician. The Simpsons also contains over a hundred instances of mathematics ranging from arithmetic to geometry to calculus, many designed to expose and poke fun at innumeracy. In fact, Al Jean, Executive Producer and head writer, has a bachelor's degree in mathematics from Harvard University. Several episodes of The Simpsons contain significant mathematics that relates to material we normally cover in our classes. For these reasons, this program is an ideal source of fun ways to introduce important concepts to students, and to reduce math anxiety and motivate students in courses for non-majors.

This website presents data from the Sloan Digital Sky Survey, a project to make a map of a large part of the universe. We would like to show you the beauty of the universe, and share with you our excitement as we build the largest map in the history of the world.

The purpose of the Sloan Consortium (Sloan-C) is to help learning organizations continually improve the quality, scale, and breadth of their online programs according to their own distinctive missions, so that education will become a part of everyday life, accessible and affordable for anyone, anywhere, at any time, in a wide variety of disciplines.

Welcome to Smithsonian Education, the central education website of the Smithsonian Institution. Access information and resources for educators, families, and students.

News & Events. Planets. Missions. Science and technology. Multimedia. People. Kids. Education. History.

CSEM stands for the Center for Space Environment Modeling. Scientists who work at the Center are interested in creating a detailed model of the space environment. They are especially interested in the environment very near the Earth. By understanding the space environment surrounding the Earth, scientists can better predict the effects of space weather storms on our planet. Since the environment surrounding the Earth is so complex, supercomputers must be used to model that environment. In this site, we share some cool, fun and fascinating items dealing with supercomputers, space environment models and Sun-Earth connections.

Stanford Engineering Everywhere is an online portal offering ten courses from Stanford’s School of Engineering— including the three-course introductory sequence in Computer Science— free of charge. SEE offers course content available to Stanford students including instructional videos, reading lists and materials and class assignments. And SEE allows you to communicate with fellow SEE students online.

The Virtual Visitor Center website is intended for the general public, particularly students and teachers. Anyone with an interest in the science we study at Stanford Linear Accelerator Center and the tools we use in that study is invited to explore this web site -- and take a tour of our physical site or stop by the real visitor center.

Is the cryosphere sending signals about climate change? Are global temperatures rising? Is global sea level rising? NSIDC's State of the Cryosphere provides an overview of the status of snow and ice as indicators of climate change. This site provides time-series data for Northern Hemisphere snow cover, mountain glacier fluctuations, sea ice extent and concentration, changes in ice shelves, and global sea level. It also provides a snapshot of current permafrost conditions.

Frequently lost in the policy discussions about human embryonic stem cells research are concrete realities that will determine how quickly such research will result in treatments and cures. Scientists are conducting research. Federal and local legislators are writing laws to broadly support the research. Non-profit health organizations and private companies are funding some of the most cutting-edge approaches. Here we will offer a selection of current research programs, new lawmaking, and happenings away from government and academia that will contribute to useful understandings of stem cells.

An introduction to stem cells, the building blocks of the body. What are Some Different Types of Stem Cells? Find out how the body uses stem cells to grow and develop. What is the Goal of Stem Cell Research? Why are researchers so interested in these cells, anyway? An introduction to the study of stem cells. Stem Cell Therapies: What is the Recipe for Success? How do researchers design and test a stem cell therapy? A step-by-step examination of a treatment for Parkinson's Disease. Stem Cell Therapies Today - Learn about established stem cell therapies currently in use. Stem Cell Therapies in the Future - Consider the potential for new stem cell therapies, as well as the challenges facing researchers working to develop them. Creating Stem Cells for Research. See how stem cells are cultured in the lab to create experimental models. What are Some Issues in Stem Cell Research? Consider some important questions in the debate over new stem cell technologies.

Stromboli Online enriches and stimulates the teaching of Earth Sciences by presenting images, movies, data, virtual field trips and other educational material in relation to volcanoes. Although there is some emphasis on Stromboli and Etna we also cover many other volcanic areas of the Earth. Find 3D images of volcanoes, watch volcanoes live from the volcano cam, and take a virtual climb up the side of volcanoes Etna, Stromboli, and many others.

Superconductors.orgis a non-profit, non-affiliated website intended to introduce beginners and non-technical people to the world of superconductors. Superconductorsis endorsed worldwide by over 160 universities, 60 science/education websites, 14 major research laboratories and 9 online encyclopedias.