Volunteer research program by recreational divers who take surveys of the world's coral reefs. About the project and its findings.

…regonians. Links to research, inventories, geospatial data, recreation, and all of the university's research forests.…

Mailing list covering recreational and serious aspects. [Requires free Yahoo membership.]

Interactive exercises, online calculators and plotters, mathematical recreations. Available in French and English.

Includes forums, recreations and interactive online homework assistance.

A article about him and his interests and contributions to recreational mathematics.

Harry Smith describes Dr. Dewdney's article in the July 1990 Scientific American's Mathematical Recreations column.

Celebrates math puzzles and mathematical recreations.

Topics include background in Babylonian, Euclid, Al'Khwarizmi, pi, and trigonometry. Also has recreations and java chat.

DNA identification, biostatistics, and recreational aspects of population genetics. Reports, software, links.

Publishes Journal of Recreational Mathematics.

…g mathematical and algorithmic art, as well as mathematical recreations and active learning through art. Allows you to write simple programs that generate geometrical patterns, ornaments and designs. Easily creates fractal effects. Features built-in tools f…

Group topics include general math, education, geometry, software, calculus reform, research and recreations.

…l reef conservation around the world by working with marine recreation providers, park managers, and local communities to establish conservation alliances and raise public awareness.…

… Western States, containing natural, historical, cultural, recreational, and economic resources.…

Advancing the study, conservation, exploration, and knowledge of caves. Although primary focus is on recreation, site has extensive information and links about caves and karst.

A visual tour of recreations of Mesozoic marine reptiles by renowned paleo-life artist Dan Varner.

A non-profit organization established to promote the welfare of and encourage the advancement and improvement of zoology, recreation, education, conservation and science.

…on campaigns for the protection of rivers for the economic, recreational, biological, and spiritual values.…

…protect human health and the food supply; and to ensure the recreational use of Gulf shores.…