Scirus - GO - speciality search engine for scientific literature.
http://www.scirus.com/
Science & Technology News Network - GO - fascinating science news & in-depth articles on general science, the environment, genetics, space, health & technology. http://www.stn2.com/
Astrobiology at NASA - GO - searching for the origins, distribution & future of life in the universe.
http://astrobiology.arc.nasa.gov/
Science Magazine - GO - highly respected scientific journal.
http://www.sciencemag.org/
Science Daily - GO - breaking news & the latest in scientific research. http://www.sciencedaily.com/
Nature - GO - international weekly journal of science, http://www.nature.com/nature/
How Things Work - GO - useful science site built around intriguing questions.
http://erwin.phys.virginia.edu/education/teaching/howthingswork/
Popular Science - GO - fuel for the curious mind.
http://www.popsci.com/popsci/
Scientific American - GO - science news, resources & reviews.
http://www.sciam.com/
New Scientist - GO - good quality science news, articles & reports.
http://www.newscientist.com/
Beyond 2000 - GO - window on the future.
http://www.beyond2000.com/default.html
Great Thinkers & Visionaries - GO - big bunch of troublemakers.
http://www.lucifer.com/%7esasha/thinkers.html
K2K - GO - explore the amazing world of "mysterious mutli-flavored neutrinos" at the Long Baseline Neutrino Oscillation Experiment.
http://k2k.physics.sunysb.edu/
PhysicsWeb - GO - latest physics news & information.
http://physicsweb.org/
Technology Review - GO - MIT's magazine of innovation.
http://www.techreview.com/
Mad Scientist Network - GO - get your questions answered by the collective cranium of a bunch of mad scientists, run some crazy experiments or browse the collection of oddities.
http://www.madsci.org/
The Why Files - GO - learn the science behind the news.
http://whyfiles.org/
AAAS - GO - American Association for the Advancement of Science.
http://www.aaas.org/
Discovery Online - GO - rich site full of news & articles about human behavior, history, planet earth, space, tech issues & much more. http://www.discovery.com/
Discover Magazine - GO - science news, web picks, feature stories & NeuroQuest mini lessons on how the mind & brain work.
http://www.discover.com/
The Invention Dimension - GO - MIT's invention resources include The Inventor's Handbook, video library, Inventor of the Week, awards program & a tons of toys for gadget fanatics. http://web.mit.edu/invent/
Significant Event Imagery - GO - stunning satellite images of the world's big events.
http://www.osei.noaa.gov/
Exploratorium - GO - museum of science, art & human perception.
http://www.exploratorium.edu/
Scanning Electron Microscope - GO - take a unique microscopic look at the world or browse the archive of magnificent magnifications.
http://www.mos.org/sln/sem
Explore Science - GO - great demonstration of the usefulness of interactivity in science education.
http://www.explorescience.com/
Try Science- GO - fun science experiments for kids, in six languages.
http://tryscience.org/
Public Library of Science - GO - promoting free access to the world's scientific & medical literature.
http://www.publiclibraryofscience.org/
NASA - GO - simply breathtaking accomplishments from this group - they can (& do) take your browser where "no browser has gone before" - & they do it nearly every day. The real time active tracking & video links with current spaceflights should not be missed.
http://www.nasa.gov/
Chandra X-Ray Observatory - GO - gateway to the hot universe of black holes, exploding stars & Galaxy clusters - untangling some of the deepest mysteries in the universe. Great education resources & quality galleries.
http://chandra.harvard.edu/
Hubble Space Telescope - GO - beautiful images of our universe being born, multimedia, interactive fun & games, Hubble facts & figures.
http://www.hubblesite.org/
Imagine the Universe - GO - get the lowdown about our universe in a clear & concise format. Ask your burning cosmic questions, or just sit back & view the great videos of the heavens.
http://imagine.gsfc.nasa.gov/
Space.com - GO - reflect on heavenly news, play games, watch videos, track missions & launches, join a community search for extraterrestrial lifeforms.
http://www.space.com/
Solar System Simulator - GO - view the universe from any point of view with this spyglass on the cosmos.
http://space.jpl.nasa.gov/
Windows to the Universe - GO - fun & different site about earth & space presented at three levels catering for beginning space cadet, intermediate solar system captain & advanced deep space commander types.
http://www.windows.ucar.edu/
Astronomy Picture of the Day - GO - simple site with daily "pin up photos" for astronomers - with picture bios & links for further research. Archives of specific subjects such as black holes & spiral galaxies.
http://antwrp.gsfc.nasa.gov/apod/astropix.html
Ask Dr Universe - GO - the world's most curious cat answers kid's questions about the universe. Dr. Universe answers some of life's most confounding questions.
http://www.wsu.edu/druniverse/
Bad Astronomy - GO - correcting science myths & solving some puzzling science questions.
http://www.badastronomy.com/
The Nine Planets - GO - multimedia tour of the solar system.
http://www.seds.org/billa/tnp/
Solar System Live - GO - view the universe from any time point or position with this interactive tool - also an earth & moon most view.
http://www.fourmilab.ch/solar/solar.html
Home Planet Tracking Software - GO - astronomy & satellite tracking package.
http://www.fourmilab.ch/homeplanet/homeplanet.html
EarthRise - GO - large database of photos of the earth from the past 15 years.
http://earthrise.sdsc.edu/earthrise/main.html
Non-Messier Objects Database - GO - images of deep space objects.
http://www.seds.org/messier/xtra/ngc/ngcindex.html
eNature - GO - bringing nature to life.
http://www.enature.com/
Environment News Network - GO - global environment issues, legislative & judicial decisions, demonstrations, conferences. Also tips on becoming an Earth-Smart consumer & making businesses more sustainable.
http://www.ens-news.com/
Ocean Planet - GO - An underwater tour of the Pacific Ocean - based on real data - created by NASA scientists for the Ocean Planet Exhibit.
http://seawifs.gsfc.nasa.gov/ocean_planet/html/oceanography_flyby.html
Sea & Sky - GO - nicely presented resources taking a deep look at the oceans & skies - information provided in different levels to best match audience needs.
http://www.seasky.org/
Exploring the Environment- GO - Earth Science modules that use satellite imagery & solution-based learning methodology as tools for students to investigate environmental problems.
http://www.cotf.edu/ete/
Transcendent Nature - GO - exquisite photography & nature imagery.
http://www.kurtross.com/
EcoWorld - GO - global environmental community.
http://www.ecoworld.com/default.htm
Wildlife Photography - GO - nature & landscape photography. Learn about our natural world through the inner vision of nature photographer Gary D.Tonhouse.
http://www.reflectiveimages.com/
Encylopedia of the Atmospheric Environment
- GO - good source of information on a range of atmospheric issues, including weather, climate, pollution, acid rain, global warming & ozone depletion.
http://www.doc.mmu.ac.uk/aric/eae/
Co2 Science Magazine - GO - center for the study of carbon dioxide & global change.
http://www.co2science.org/
Mandelbrot Set Explorer - GO - create your own fractal art.
http://aleph0.clarku.edu/%7edjoyce/julia/explorer.html
Fractal Movie Archive - GO - big fractal collection.
http://graffiti.u-bordeaux.fr/mapbx/roussel/fractals/anim.html
Basin Pictures - GO - more art of chaos.
http://www-chaos.umd.edu/misc/basinpics.html
Freeware Fractal Generator - GO - from the Stone Soup team.
http://spanky.triumf.ca/www/fractint/fractint.html