This NASA website contains extensive information on sun spots and sun spot prediction. Users have access to several forms of graphical and numerical data such as sun spot numbers, the Maunder minimum, the Butterfly diagram, the Greenwich sunspot data and sun spot cycle predictions. The site also includes a wealth of information about the sun and NASA's ongoing sun research. Full description.

NOAA Ocean Service (NOS) is responsible for the observation, measurement, assessment and management of the nation's vast coastal and ocean areas. NOS provides world-class products and services that protect millions of lives, billions of dollars in property and irreplaceable natural resources daily. This website is a portal to all the NOS observations, information, measurements and programs. In the ... Full description.

The Mote Marine Laboratory's Center for Shark Research (CSR) is an international center for laboratory and field research, scientific collaboration, consulting, education, and public information on sharks and their relatives, the skates and rays. The CSR research mission includes basic and applied studies of all aspects of shark biology, from anatomy and physiology to ecology and fisheries science. ... Full description.

This site, managed by NOAA Fisheries, provides a vast amount of information regarding sharks, their characteristics and behavior. Users can access information on a variety of shark species including white sharks, tiger sharks, blacktip sharks and bull sharks. Also included is information regarding shark management, shark sciences, reducing risks of shark attack and frequently asked shark questions. ... Full description.

The United States Government's Invasive Species website is the gateway to Federal efforts concerning invasive species. On this site users can learn about the impacts of invasive species and the Federal government's response, as well as read select species profiles and find links to agencies and organizations dealing with invasive species issues. This is also the website for the National Invasive Species ... Full description.

The Scientific American Frontiers program on PBS aired a special series on invasive alien species. This website is the central site for that program. Users can watch web video of each segment, access additional links on invasive species, email the scientists featured in each segment and read news articles about topics pertinent to invasive species. The America's Most Un-Wanted feature allows users ... Full description.

This National Geographic news article from December 2001 outlines the eruptive progress of Popocatepetl volcano in Mexico. The article discusses the difficulties of evacuating locals during volcanic disasters because of their overall beliefs that the volcano is their "friend." Users can also link to other National Geographic news stories, special news series and the main National Geographic site. Full description.

This National Geographic news article from July 2002 describes world wide volcanic hazards. Due to the increasing population near dangerous volcanoes, the importance of volcanic monitoring and hazard prevention is essential. This article discusses the difficulty of educating residents about volcanic hazards and establishing programs to prevent disasters. The article also outlines several National ... Full description.

The Weekly Volcanic Activity Report is a cooperative project between the Global Volcanism Program of the Smithsonian's National Museum of Natural History and the US Geological Survey's Volcano Hazards Program. The project provides up-to-date worldwide volcanic activity information. Users can access regional maps as well as a map of volcanoes discussed each week. New eruption information is provided ... Full description.

National Geographic News Magazine provides news articles on a variety of topics such as human geography, history, paleontology, biology, engineering and more. The homepage highlights the days' top stories. There are also links to specialized news pages regarding animals and nature, science and technology, people and culture, archeology and paleontology, adventure and exploration, the environment and ... Full description.