Science

Independent advocate of lightning safety for people and structures. Includes information about their services, lighting strike incidents, safety guidelines, and a reference section of general and technical information.

Non-profit organization founded to bring together amateur and professional severe weather scientists in an attempt to better understand dangerous storms through the collection and diffusion of knowledge.

Tornadoes, weather watchers, fact sheet statistics for every state, and links to the Disaster Center states pages.

Twisters, tornadoes and Storm photos with educational information.

Explains how air masses form, the principle classifications that influence the continental United States, and the formation of fronts between them.

Explains how the Earth's rotation results in three circulations, the Hadley, Ferrel and Polar cells.

Established in 1962, the GSI is responsible for the geological study and the exploration-evaluation of the mineral resources (except hydrocarbons) of Iran.

Searchable mineral database with physical and chemical properties as well as locality information.

Sells worldwide mineral specimens to collectors. Stock list with pricing and images included.

General rockhound information site with rocks and minerals for sale.

Jewelry, gemstones, freeform cabochons (cabs), spheres, mineral specimens, and lapidary (cabbing / faceting ) rough.

Group of individuals who share common interests in collecting and working with gems, minerals, jewelry, geology, and fossils.

This Angels Camp, CA club shares knowledge and interests in rocks and minerals with monthly meetings, a lapadairy store, and an annual show.

Located east of the San Francisco bay area, in Concord CA, the club has an annual mineral and gem show, monthly meetings, and field trips.

A lapidary arts, paleontology, geology and jewelry making club in the San Fernando Valley. Online field trip reports, gem fair information and educational materials.

John Merritt shares stories related to the hobby of rock hounding, provide information useful to rock hounds and offers cabachons and other specimens and supplies.

Information on field trips, how to join, and newsletter. California.

Society for Geology Applied to Mineral Deposits. Offers a journal for fast publication in economic geology.

Manufacturer of measuring equipment including spirit levels, spirit level vials, circular vials, laser levels, surveying levels, digital and engineers precision levels.

Online shopping for lasers, prism poles, GPS, Pentax, Leica, CST/Berger, Sokkia, Garmin and other survey products.

Manufacturer of a range of surveying equipment, especially total station accessories.

Sales of survey equipment, engineering and architectural equipment and supplies, digital imaging services, and reprographics services.

Surveying equipment and supplies. Total station, level, laser, rods, wood stakes, marking paint, authorized service center.

A statewide organization of individuals having an interest in the practice of surveying in the state of Pennsylvania.

Bulletin board, list of chapters, code of ethics, online library and other related information.

A professional membership society representing the surveying and mapping profession based in the state of Florida.

Non-profit private organization offering education programs, conventions and seminars for licensed surveyors, and information to the public. Includes FAQ, professional criteria, searchable database, chapter officers, member applications and login.

Provide topographical, measured building, hydrographic, structural monitoring, landscape surveys as well as setting out, CCTV drainage and underground utility surveys. Leigh, Worcester.

Independent GIS consultancy specialising in providing information to the broadcast industry. Provide services supporting the ongoing process of the switch from analogue to digital television and radio. United Kingdom.

Offers topographic surveying, cadastral work and GPS point determination services in Romania.

Digital aerial photography, photogrammetric mapping and digital orthophoto production using the Applanix DSS digital aerial camera system designed to support direct georeferencing.

Greek company based in Thessalonica offering professional topographic aerial photography. Provides information on the equipment used and samples of work. In Greek and English.

Hyperspectral imaging technology by Earth Search offers a powerful economic tool for mineral exploration and environmental research.

Encyclopedia article describing the geophysics of the quake, casualties, damage, and emeregency response.

Includes information on victims, news, features, recovery map, videos, photographs, and twitter feeds.

Feature stories and breaking news.

Person finder, maps, videos, links to news, warnings, disaster forums, train and blackout information. [Japanese/English]

The German government, keen not to be seen as tight-fisted in an election year, promises a generous response to patch up flood damage.

Priceless works of art and historic cultural landmarks appear to have been saved from the devastating floods in Prague and Dresden.

An elephant and a hippopotamus are dead and a gorilla is missing after flood waters swamped Prague's zoo.

Flooding in Europe looks set seriously to disrupt the Czech Republic's economy, forcing the government to borrow more.

BBC journalist Michal Ruzicka and his family were among those evacuated from the Karlin district of Prague, along with thousands of others.

As water levels start to recede, Prague surveys the damage inflicted by the worst floods in the Czech capital for 200 years.

Some people returned home as flood waters in Prague receded, but many areas of the historic city remained off-limits after the worst flooding in 200 years.

Educational site covering the early evolution of tetrapods by focusing on the Late Devonian Red Hill locality in Pennsylvania and its flora and fauna.

Description and maps of the continents as they existed at the time.

Provides descriptions and photographs of three specimens of Rhenopyrgus sp. from the Dvorce-Prokop Limestone.

An overview of the period from the UC Berkeley Museum of Paleontology.

Photos of trilobites from around the world, as well as a searchable database of over 280 specimens.

Detailed description of this Devonian crinoid, found in 1971 by P. Lukes, the stratigraphical position of which is uncertain because of lack of conodonts.