Science
- 461
- Wikipedia - 2004 Indian Ocean Earthquake
- Country by country reports of damage, historical and regional comparisons. Includes technical information on the quake and plate tectonics.
- 463
- Cascades Volcano Observatory
- Information about and photos of the Cascades volcanoes, Mount Saint Helens updates, and volcano monitoring and hazards information.
- 466
- NOVA Online: Deadly Shadow of Vesuvius
- Talks about the Volcanic Explosivity Index. Talks about predicting volcanic activity and disaster planning.
- 467
- NOVA: Volcano's Deadly Warning
- Companion Web site to the NOVA program. An interview with seismologist Bernard Chouet, who has come up with a new method for predicting volcanic eruptions.
- 468
- Volcano Under the City
- Explore some of the worst volcanic disasters of the past four centuries, find out what features make an unquiet volcano tick, and learn if it is possible to forecast volcanic eruptions.
- 469
- VolcanoWorld
- Includes stories about volcanoes by children's author Jane Kurtz, school project ideas, legends, virtual field trips, and games.
- 470
- Aquifer Basics
- Offers a brief definition of an aquifer along with pictures and information on various aquifer types, including sandstone and volcanic aquifer rocks.
- 471
- Edwards Aquifer
- Provides information on one of the world's most well-known aquifers. Features graphs and charts, images, essays, and pictures that describe how the aquifer formed.
- 472
- Enchanted Learning: Tides
- Brief description and illustrations about what causes the tide to rise and fall.
- 473
- Moon Tides
- Explains with graphs and pictures how the moon affects oceans. Includes the differences between lunar, spring, neap, high, and low tides.
- 476
- Frontline: Nuclear Reaction
- Articles on several subjects such as why the French like nuclear power, and what happened at Chernobyl.
- 477
- How Atom Smashers Work
- Shows specific information about the devices used to break apart something as miniscule as an atom.
- 478
- How Atomic Clocks Work
- Explains the principles behind the atomic clocks, the most accurate timekeepers in the world.