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MadSci Network

Search the archives for previously answered questions or get online and ask your own through Ask-A-Scientist.


Smithsonian Encyclopedia

Explore the viagra tablets for sale many categories of the science and technology portion of this website from the Smithsonian Institution.

List of viagra best place U.S. government science and technology sites.


Windows To The Universe

Site is geared to beginning, intermediate and advanced students. Covers topics in earth science, astronomy, geology, ecology, climate and more. is a global science gateway connecting you to cialis order national and international scientific databases and portals.” 





Astronomical Conversion



American Astronomical Society


Green Bank Radio Telescopes

A National Radio Astronomy Observatory in West Virginia.


Hubble Telescope

News, images and viagra in spain other astronomy information.


NASA’s Hubble Telescope


National Geographic Solar System

Overviews of the sun, planets, moons, and astroids of our solar system: good for middle school students and beyond.


Science Reference Services

From The Library of Congress.


Space Telescope Science Institute

The Space Telescope Science Institute is operated for NASA by the Association of Universities for Research in Astronomy.


Space Science Education Resource Directory

Created by NASA for K-12 students and educators.


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The Biology Project

Tutorials created by the University of Arizona for college students.


The Body Explained

A resource from the Baylor College of Medicine for teachers and students. It offers slides and videos for use in the classroom, lesson deomonstrations, lab techniques and more.


Dominant and Recessive Genetic Traits

A list compiled at Blinn College in Texas.


Genetics Home Reference

A website about genetic disorders and the effects genes have on our health. It includes a glossary and a handbook, both good for homework help, with definitions and descriptions of The Humane Genome Project, cells, genetics, DNA, Chromosomes and gene therapy.


Human Genome Project

Genome programs of the U.S. Department of Energy Office of Science. Resources for students and the public on the Human Genome Project and genetic research.


The Journal of Physiology


Learn Genetics

From The University of Utah Genetic Science Learning Center. Includes instructional video and virtual labs for students and adults.




African Wildlife Foundation

Learn about African animal species, their habits and conservation status. Can search by animal name or preservation association.



Searchable site about amphibian conservation and biology. Created by the University of California, Berkeley.


Animal Diversity Web

From the University of Michigan.


Biology Browser

A meta site from Thomson Scientific that links to full text articles and answers on the Internet.


Journey North

Maps, journal entries, pictures and levitra 6 free samples information about global migrations of birds, butterflies and plants.


Marinebio Kids

Information about marine habitats and animals. Includes good photographs.


National Fish and Wildlife Service Northeast Region


National Geographic for Kids

Search for facts about animals or people and places: good as homework help. Includes online games and projects kids can try at home.


New York State Wildlife Rehabilitation Council, Inc.


Reptile Database

The scientific names, taxonomy and distribution of all living snakes, lizards, turtles, amphibians, tuataras and crocodiles.


San Diego Zoo Animal Bytes

Visually appealing website with basic facts and pictures of tramadol cod online animals and their habitats.


Seeing, Hearing and Smelling the World

Information about human senses from the Howard Hughes Medical Institute. Descriptions are for high-school aged or above layperson. Includes a Spanish language version.


Tree of Life Webproject

Over 9,000 webpages about the diversity and evolutionary history of organisms. Includes TreeHouses, pages for students K-16 and teachers.


Turtles of the World

Taxonomy, pictures, distribution, natural history, habitat and physical description of many of the world's turtle species.


USGS National Wildlife Health Center

Good place to find information on current health risks to wildlife and levitra profesional the environment.




Arbor Day Foundation

Information about planting and caring for trees in your area: cold hardiness zones, pruning guides, tree identification guide and other tips.


Botanical Society of America

Site created for professional botanists, plant scientists, educators, students and amateur plant science enthusiasts around the world. Site includes nationwide job postings.


Global Forest Information Service

Fully searchable website for news, events, and full text publications.


National Gardening Association

Plant Finder allows you to find the plant by, color, hardiness, height, light requirements and more.This site includes searchable databases for plant pests and weeds, and a reference section with calculators for Nitrogen, sulfur, fertilizer and limestone. There are local guides for all US. states and resources for teachers and consumers.


Plants Database

Created by the US Department of Agriculture, this database can help you ientify plants with photographs, determine their geographical range, growing habits and scientific name. It includes fact sheets and cialis samples in canada guides on hundreds of species as well as printable and it's cool viagra canada interactive plant identificatio keys.


The University of British Columbia, Botanical Garden and Centre for Plant Research


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American Chemical Society


Chemdex: Directory of Chemistry

Websites related to research, chemistry organizations, chemists, university departments and more.


Chemistry Timeline

Highlights of achievements in chemistry through history. This is primarily a visual website from the Royal Society of Chemistry.


Material Safety Data Sheets and Toxicology Reports

Searchable databases compiled by the Safety Information Resources, Inc.


Molecular Weight Calculation


NASA’S Imagine the Universe

For ages 14 and up. See StarChild for younger children.


National Institute of Standards and Technology


NIOSH Pocket Guide to Chemical Hazards

National Institute for Occupational Safety and Health.


Periodic Table and List of Elements

Diagrams and properties of the elements. From the Los Alamos National Laboratory's Chemistry Division. Elements and their properties.


Periodic Tables

Links to basic or scholarly Periodic tables in English and in other languages.



Search for information on chemical compounds, their biological properties, and bioassay records.


ThinkQuest Chemistry Tutor

For high school age students and up.


Toxic Substances and Disease Registry

From the U.S. Department of Health and Human Services. Available en Espanol.


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Ecology and Environmental Science


All About Birds

An online bird guide from Cornell's Lab of Ornithology. It includes photos and sound clips to help you identify species, nests, eggs and songs. Also links to articles and sites about bird biology,natural history and conservation.



Environmental information from the World Resources Institute. Covers topics such as ecosystems, watersheds, environmental economics. Podcast available.


Ecology and Society

A journal of integrative science for resilience and sustainability.


Global Climate Change

Global warming and other climate change information available at the Pew Center For Climate Change


National Council for Science and the Environment


Earth Science World

Careers, news, interactive geological time line, searchable images.


Smithsonian Ecology

Explore and read about current topics. From the Smithsonian Institute.


U.S. Environmental Protection Agency (EPA)

Includes online reference help, information about laws, careers, programs and cheap levitra generic current news.


Water Quality Information Center

Information about irrigation, water availability, wetlands and more from the U.S. Department of Agriculture.


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American Wind Energy Association


American Nuclear Society

News, career information, resources for teachers, and a speakers bureau.


Energy Conversion Tool



Energy Information Administration

Official Statistics from the U.S. government on cost, demand and production for electricity, petroleum, wind, coal, nuclear power, and renewal alternative fuels.



Descriptions with diagrams of buy cialis paypal solar, wind and water powerd electricity. Also includes simple descriptions of what electricity is. From The Electricity Forum.



Description of how hydroelectricity works from the Union of Concerned Scientists.


National Mining Association

Representative for various aspects of the coal mining industry. Included downloadable fact sheets on mining safety, economics of mining, coal and carbon capturing.

Explains uses, technology, regulation and business of natural gas.


Nuclear Energy Institute

United States regulations, Congressional activities and a press room section.


Renewable Fuels Association

Facts about ethanol production and female herbal levitra its use as an alternative fuel.


U.S. Department of Energy

U.S. Government's information for students, teachers and the public on the environment, health and safety, security, and technology.


Wind Energy Kids Page

Basic explanation of how wind produces energy from the Energy Information Administration.


World Nuclear Association

Information about the industry, technology, environmental aspects, and conferences.


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Geological Time

Eras, Periods, and Epochs chart.


Geology from the U.S. Geological Survey

Includes information about the profession, mapping, and programs in landslides, volcanoes, energy and natural resources.


Geology of viagra order New York State

Maps, photographs, virtual reality panoramas and movies on a site created by Hofstra University and Oceanside High School.


Windows To The Universe: Geology

Choose from text for beginners, intermediate and advanced users. Information about minerals, rocks, plate tectonics, geologists and fossils.


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National Center for Atmospheric Research

Satellite, radar, surface and upper-air conditions, forecasts and data.


National Weather Service

Forecasts and Radar maps


NOAA's (National Oceanic and Atmospheric Association) Data Center

Links to associations, bibliographies and data sets.


NOAA Conversion Charts

Find values for wind chill, the water equivalent for snow, converting knots into miles per hour, Celsius to Fahrenheit and more.


Weather Warehouse

Find historical weather data.

Weather Underground

Find current and historical weather data.



Find current and historical weather data.


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NASA Oceanography

See how the viagra superactive canadian ocean affects Earth's climate and ecology. Data collected from satellites helps predict climate cycles such as floods and drought or El Nino.


NOAH Teacher At Sea Program

"The program provides a unique environment for learning and enter site ordering viagra overnight delivery teaching by sending kindergarten through college-level teachers to sea aboard NOAA research and survey ships to work under the tutelage of scientists and crew. Then, armed with new understanding and experience, teachers bring this knowledge back to their classrooms." Read the teachers' logs online.


Office of Naval Research

Find out about waves, habitats, animals, and research vessels. Includes an email address where students can send questions. 


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Dino Directory

Research dinosuars by their name, their body shape, when they lived and where their fossils have been discovered. A site suitable for all ages from the Natural History Museum in London, UK.


Paleobiology with Evolutionary Milestones Across Geological Time

Chart with Eras, Periods and Epochs from The Virtual Fossil Museum.


Paleontology Portal

A site for students and teachers wanting to know more about the fossil records of plants and animals. Includes timelines, maps, photographs and buy discount online viagra an extensive database of collections.


University Of California Berkley Museum of Paleontology

Online exhibits and ongoing research at the Museum. Includes an extensive glossary of biology and paleontology terms.


Virtual Fossil Museum

"Fossils across geological time presented in multiple contexts of geological history, the tree of buy generic levitra from india life, paleobiology and evolution."


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Acoustical Society of America

Career information, sound files, essay on Wave Theory of Sound, online resources and degree programs.


American Institute of Physics

Search for jobs, post a resume, current news, public policy information, and conference proceedings.


American Physical Society


Energy Information Administration

List of nuclear reactors by state.


Fear of Physics

Visual demos, dictionary and interactive calculators.


Fermi National Accelerator Laboratory

Essays and information about particle physics, links to online resources, and the Fermi Lab library with full text documents online.


Frequency to Wavelength Conversion Tool



Force Conversion Tool



Institute of Physics

Physics education, professional societies, science policies and indian cialis generic news.


Optical Society of America

Information about the industry, technology and science of light.


Physics Classroom

High school level physics practice and explanations.



A wiki for quantum physics.


Thinkquest: Physics

Explanations and examples for beginner to advanced students of physics.


WWW Virtual Library: Physics

Directory of online resources in physics. 


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Science News


Discovery News

Today's news from The Discovery Channel.


Earth Observatory

News and Images of the globe taken from spacy by NASA. Strong focus on weather, climate, natural hazards and energy.




National Geographic Science News


National Public Radio Science Friday

Articles and discussions about the latest science topics. Radio program podcast subscription is available from the website.


Science News Online

Articles from this week's Science News magazine.


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Science Images


ARKive : Images of Life on Earth

Photographs and video of plant and follow link viagra buying animal life. Also includes a special collection of where to buy viagra uk endangered animal images.


Botanical Society of British Columbia

Images and wallpapers available to download. Features a picture of the day.


Earth Science World Image Bank

Geoscience images of volcanoes, glaciers, animals, caves, coral and more. Images, provided by the American Geological Institute (AGI), are fully cataloged and available for non-profit or educational use.


Cornell Lab of Ornithology's Macaulay Library

Extensive collection of video and sound recordings of birds,amphibians, arthropods, mammals, fish and reptiles.


Physics Central Images

Images related to particles, lasers, fluids and more


USGS Directory of Images

A list of sites with earth science, geography, animal, water ways, and national park images.


Smithsonian Image Collection

Selection of photographs from Smithsonian's museums, galleries, research centers and zoo. Search by collection, geographic region, photographer, or keyword.


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4000 Years of Women in Science

Pictures and biographies, with an emphasis on pre-20th Century women.


Contributions of 20th Century Women to Physics

Includes biographies and pictures of woman scientists in many fields of physics. Site maintained by UCLA.


Marie Curie and the Science of Radioactivity

An online exhibit by the American Institute of Physics.


Nobel Foundation

List of all Nobel Prize winners, online games for kids, information about the history of and the award ceremony for the Nobel Prizes.


Windows to the Universe Scientists from the Age of Enlightenment

Biographies of scientists such as Isaac Newton, Ben Franklin, Caroline Herschel and more.


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