Earthquakes & Seismic Activity

Recent Worldwide Earthquakes.
National Earthquake Information Center.
Earthquake Central.
Seismosurfing the Internet.
The World-Wide Earthquake Locator.
Seismological Laboratory: University of Nevada Reno.
University of Utah Seismograph Stations.
Earthquake Hazards in Washington and Oregon.
Understanding Earthquakes.
The Great 1906 San Francisco Earthquake.

Volcanic Activity

Active Volcano Information (MTU Volcanos Page).
Cascades Volcano Observatory.
The Hawaii Center for Volcanology.
Global Volcanism Program.
Long Valley Current Status.

The Weather

National Weather Service - Interactive Weather Information.
The Weather Channel Home Page.
Weather Net - Weather Cams.
Storm Spotters Guide.
Drought Watch.

Tropical Storms

USA Today's Guide to Hurricane Information.
WeatherNet's Tropical Weather.

The Cosmos

NASA Home Page.
Sky Online's Comet Page.
Keith's Astrophotography and Astronomy Page.
Richard Hoagland's The Enterprise Mission.
The Cydonia Files: Ancient ruins on Mars?.
National UFO Reporting Center.