Lichen on basalt towers of the Columbia Plateau, eastern Washington.

These links were cleaned up in December 2009 (when both the Chemistry and Geology categories, looking very insufficient, were also commented out).

The external links open in a new window, so either close it or use your taskbar to get back here.

resources & links
mostly serious science:
1. For the few scientific disciplines covered here, and the others, one could perhaps start with Wikipedia, at en.wikipedia.org/wiki/Science .
2. intute.ac.uk: "Helping you find the best websites for study and research"
3. sciencedaily.com and sciencenews.org
4. newscientist.com and scientificamerican.com
5. xxx.lanl.gov: "Open access to 400,814 e-prints"
6. 101science.com: Science 101, a web index to "more than 20,000 science sites"
7. scicentral.com: "Gateway to the best scientific research news sources"
8. micro.magnet.fsu.edu/index.html: Molecular Expressions "goes where no microscope has gone before"
9. pbs.org/wgbh/nova: Nova: maybe not science, but still cool
10. hardscience.info, Hard Science the Easy Way, providing "The absolute best sites on hard science and mathematics that the Web has to offer," from Erik Max Francis (see below).
    mostly fun science:
11. amasci.com: Science Hobbyist: amateur science, cool science, weird science, more
12. madsci.org: "Welcome to the laboratory that never sleeps!"
13. eskimo.com/~billb/weird.html: "Weird Research, Anomalous Physics"
14. scienceU.com: neat astronomy and geometry, including tilings
15. lhup.edu/~dsimanek/home.htm: with such tasty treats as "The Museum of Unworkable Devices" -- perpetual motion machines as physics puzzles.
    
    mathematics
    links and resources:
16. math.upenn.edu/MathSources.html, from U Penn
17. dir.yahoo.com/science/mathematics: of course
18. ams.org/mathweb: Math on the Web from the the American Mathematical Society
19. mathworld.wolfram.com: "The Web's most extensive mathematics resource"
    tutorials, tables, etc.:
20. www-groups.dcs.st-and.ac.uk/~history: The MacTutor History of Mathematics
21. maths.surrey.ac.uk/hosted-sites/R.Knott/Fibonacci/fib.html: "Fibonacci numbers, the Golden section, and string"
22. dept.physics.upenn.edu/courses/gladney/mathphys/Contents.html: "The Interactive Textbook for Mathematics, Physics, and Chemistry" was put up in 1994 and assumes extensive use of Maple, but is still good.
23. research.att.com/~njas/sequences: "On-Line Encyclopedia ofInteger Sequences. Type in a series of numbers and the database willcomplete the sequence and provide its name, mathematicalformula, structure, references, and links." Great site!
24. math2.org: "Math Reference Tables" has theorems, tables, identities, proofs, graphs, and more
25. math.niu.edu/~rusin/known-math/index/index.html: The Mathematical Atlas organized according to the Mathematics Subject Classification
26. netlib.org: "Netlib is a collection of mathematical software, papers, and databases."
27. ptc.com/products/mathcad/: Mathcad
    
    physics
    "Then, those part of the Cryogenic Dark Matter Search experiment monitored the detectors for signs of collisions caused by weakly interacting massive particles [WIMPs], which could be a type of dark matter created just before the Big Bang." – from the Minneapolis startribune.com. Huh?
28. en.wikipedia.org/wiki/Wikipedia:Books/Physics is "a community book, a collection of Wikipedia articles...maintained by the Wikipedia community."
    from universities:
29. physics.uoguelph.ca/tutorials/tutorials.html: the Department of Physics of the University of Guelph (in Ontario) provides only half a dozen tutorials, but they're very good, as are their remedial math lessons.
30. hyperphysics.phy-astr.gsu.edu/hbase/hframe.html: HyperPhysics, where "Online tutorials cover a wide range of physics topics, including modern physics and astronomy...."
31. upscale.utoronto.ca/GeneralInterest/GeneralInterest.html: the Physics Virtual Bookshelf are "documents about Physics written by staff members of the Department of Physics, University of Toronto...felt to be of interest to a wider community" that are actually great lecture notes.
32. math.ucr.edu/home/baez/physics: "This is the web version of the Usenet Physics FAQ. Its purpose is to provide good answers to questions that have been discussed often in sci.physics and related usenet newsgroups. The articles in this FAQ are based on those discussions and on information from good reference sources."
    organizations:
33. physicsworld.com, "news, views and information for the global physics community from IOP (Institute of Physics) Publishing"
34. physicscentral.com, Physics Central, where kids (mostly) can "learn how your world works," and physics.aps.org, "Physics--spotlighting exceptional research," both from aps.org, the American Physical Society
35. aip.org: American Institute of Physics, for the profession
    personal:
36. alcyone.com/max/physics: A fine personal site from Erik Max Francis, with physics references, a few proofs, and more.
    two on superstrings:
37. theory.caltech.edu/people/jhs/strings/index.html: The Second Superstring Revolution by John H. Schwarz
38. superstringtheory.com is "The Official String Theory Web Site"
    and five accelerators:
39. lhc.web.cern.ch/lhc: The Large Hadron Collider Project at CERN
40. bnl.gov/RHIC: the Relativistic Heavy Ion Collider at Brookhaven National Laboratory
41. fnal.gov: Fermilab -- the Fermi National Accelerator Laboratory
42. lbl.gov: Berkeley Lab -- the Lawrence Berkeley National Laboratory
43. slac.stanford.edu: Stanford Linear Accelerator Center
    
    astronomy
    There are also a few links to distributed computing sites that you might like to look at.
44. skyandtelescope.com: Sky and Telescope
45. ast.cam.ac.uk/~dwe/astronomy.html: a few astronomy links from Dafydd Wyn Evans of Cambridge University Institute of Astronomy, which also has a page of more technical links.
46. csep10.phys.utk.edu/astr161/#resources: Web links for Astronomy 161 (see below) from the University of Tennessee
47. nationalacademies.org/ssb: the Space Studies Board of the National Academy of Sciences, as "advisors to the Nation" provides an "independent, authoritative forum..."
    solar system:
48. solarviews.com: The Solar System -- one-stop shopping
49. nasm.si.edu/ceps: Center for Earth and Planetary Studies at the Smithsonian
50. csep10.phys.utk.edu/astr161/lect/, Astronomy 161, a nice hyperlinked intro to The Solar System
    deep space:
51. hubblesite.org, HubbleSite, which has, among much else, hubblesite.org/gallery/album/entire_collection/pr1995044b, "Star-Birth Clouds in M16"
52. map.gsfc.nasa.gov: the Wilkinson Microwave Anisotropy Probe measures the background radiation of the Big Bang. It sits at the L2 Lagrange point. The WMAP has "definitively determined the age of the universe to be 13.73 billion years old to within 1% (0.12 billion years)," "nailed down the curvature of space to within 1% of "flat" Euclidean," determined that "ordinary atoms (also called baryons) make up only 4.6% of the universe," and much more.
    satellites:
53. heavens-above.com/main.asp?...loc=Seattle...: visible satellite predictions for Seattle, including Iridium flares
54. liftoff.msfc.nasa.gov/RealTime/JPass: Java satellite tracking
    space weather:
55. swpc.noaa.gov/SWN: Space Weather Now from NOAA's Space Weather Prediction Center, and
56. spaceweather.com, which can be faster
57. nasa.gov/mission_pages/themis/auroras/index.html: a good page from NASA on auroras
58. pfrr.alaska.edu: the Poker Flat Research Range in Fairbanks, Alaska, with auroras and more
    NASA sites:
    NASA is basically a big umbrella organization. It has a dozen separate centers -- Jet Propulsion Laboratory, Marshall Space Flight Center, Ames Research Center, et al. Then there are all the different missions NASA has, which is currently dozens -- from Aura, through Hubble, to Voyager. Centers, missions, news, data products, etc. -- if you don't know where to look it can be a daunting task trying to find something.
    Being helpful, they did this: "NASA's public Web Portal is organized so that users can take multiple paths to information. The same content may appear in multiple sections, because people navigate through the site in different ways. The three main navigational paths through the content are: * broad topic areas * audience groups * subject areas."
    Oh, well, maybe that explains why I keep going in circles....But here's more sampling of what's available:
59. nasa.gov, NASA, and its sitemap, where you may want to start.
60. Browse their great Image Gallery and the Astronomy Picture of the Day from the Goddard Space Flight Center.
61. The Jet Propulsion Laboratory handles a couple of dozen missions, including "Live from Mars."
62. Goddard Space Flight Center handles dozens of missions, including the Hubble Space Telescope and the Earth-oriented Earth Observatory.
63. science.msfc.nasa.gov, the Marshall Space Flight Center hosts the latest NASA news.
64. and finally, an advanced search of NASA's millions and millions of pages.
65. nasawatch.com, too
    
    chaos theory
66. order.ph.utexas.edu/chaos/index.html: "What is Chaos? a five-part online course for everyone," put up in 1998
67. faraday.physics.utoronto.ca/PVB/Harrison/Chaos/Chaos.html: "a non-technical survey of chaotic systems"
68. mcanv.com/ocourse.html: a chaos course with a bit of math
69. en.wikipedia.org/wiki/Chaos_theory: Wikipedia's chaos article with its External links and their fractal page.
70. industrialstreet.net/chaosmetalink/: The Chaos Metalink
71. exploratorium.edu/complexity/CompLexicon.html: complex lexicon
    fractals:
72. mitpress.mit.edu/books/FLAOH/cbnhtml: The Computational Beauty of Nature
73. mathcs.sjsu.edu/faculty/rucker/chaos.htm: chaos downloads (PC only)
74. thinks.com/webguide/fractal.htm: links to fractal resources
    
    weather
    Links to glossaries of weather-related terminology are on the Weather glossary page, and links specific to Numerical Weather Prediction can be found on the NWP inFAQ. Links related to climate and global warming can be found at enviro.html.
    portals:
75. weather.gov is NOAA's National Weather Service home page
76. weather.com is the Weather Channel
77. wunderground.com, the excellent Weather Underground
78. metoffice.gov.uk is the UK Met Office's first-rate weather site.
79. bbc.co.uk/weather/coast/shipping/index.shtml is the BBC's Shipping Forecast, which one really needs to hear.
80. en.wikipedia.org/wiki/Portal:Weather: Wikipedia's weather portal
81. The University of Illinois at Urbana-Champaign (which does so much for the computing world) has a Dep't of Atmospheric Sciences which puts out the "Online Guides," at ww2010.atmos.uiuc.edu/(Gh)/guides/home.rxml, a "Collection of multimedia instructional modules in meteorology...."
82. weather.unisys.com provides satellite imagery, radar data, modelling info, and more
83. rap.ucar.edu: more good weather stuff from the Research Applications Lab of UCAR
    links sites:
84. NOAA's page of Weather & Climate Links is at srh.noaa.gov/ssd/html/wxlinks.htm.
85. WeatherNet from the University of Michigan at cirrus.sprl.umich.edu/wxnet was a good place to start, but apparently not updated since 2004.
86. The hypertext version of the Usenet sci.geo.meteorology data sources FAQ is well annotated and very usable.
87. esrl.noaa.gov/psd/data/data_faq.html, "Locating climate and weather data and information," from NOAA's Earth System Research Laboratory (ESRL) concentrates on climate.
    satellite loops:
88. atmos.uiuc.edu/(Gh)/wx/satellite.rxml: satellite products from UIUC
89. squall.sfsu.edu/scripts/gwir2sml.html: animated GOES-West from SFSU.
90. ssec.wisc.edu/data/comp/latest_cmoll.gif: always and only one beautiful image, from the University of Wisconson