Iowa Academy of Science
- Promotes scientific research, science education, public understanding of science, and recognition of excellence in these endeavors. Includes information about membership, publications, events and photographs. Located in Des Moines.
- http://www.iacad.org/

HerpNet.net
- A photographic field guide and detailed account of Iowan reptiles and amphibians as well as related links.
- http://www.herpnet.net/Iowa-Herpetology/

Conservation Districts of Iowa (CDI)
- Nonprofit organization devoted to providing educational programs on the conservation of soil, water, and other natural resources. Includes events, links to districts, membership form, employment opportunities and legislative issues. Located in Chariton.
- http://www.cdiowa.org/

Cosgrove Farm
- Dedicated to preservation of 19 acres of native tall grass prairie ground located near Cherokee in northwest Iowa. Includes partial listing of species, donation information and photo slide show.
- http://iowaprairieland.com/

Iowa Lakes Valuation Project:
- Provides information about lakes usage, water quality, and perceptions. Includes alphabetical lists of lakes and counties.
- http://www.card.iastate.edu/lakes/lakelist.aspx

Neal Smith National Wildlife Refuge
- Reconstructing tallgrass prairie and restoring oak savanna on 8,654 acres of the Walnut Creek watershed in Jasper County. Includes history, information about activities and directions.
- http://www.fws.gov/midwest/NealSmith/

Iowa Association of County Conservation Boards
- Non-profit organization assisting member county conservation boards in areas of board member education, public relations, and legislation. Includes a county directory, events, volunteer opportunities and office hours. Located in Ankeny.
- http://www.ecity.net/iaccb/

Iowa Division of the International Association for Identification
- Law enforcement forensic articles on footwear, photography, fingerprints, DNA, and links to other forensic sites. Located in Mason City.
- http://www.iowaiai.org/

Iowa Environmental Council
- Alliance of organizations and individuals working together to protect Iowa's natural environment. Overview of focus areas, background information, and news.
- http://www.iaenvironment.org/

Ozone Maps of Iowa
- Maps depict recent 8-hour and 1-hour average concentrations of ozone in the state's air.
- http://www.airquality.co.polk.ia.us/OzoneMaps.aspx

Camp Silos
- Explores the prairie, pioneer farming, the story of corn, and the future of farming. Located in Waterloo.
- http://www.campsilos.org/

Iowa Renewable Fuels Association (IRFA)
- Fosters the development and growth of the state's renewable fuels industry through education, promotion and infrastructure development. FAQs, articles, news items, links, and resources.
- http://www.iowarfa.org/

Iowa Natural Heritage Foundation
- Dedicated to protect, preserve and enhance the state's natural resources. Includes current projects, a FAQ, membership details, volunteerism, special events, and an outdoor recreation guide. Located in Des Moines.
- http://www.inhf.org/

Iowa Farm Bureau
- Voluntary organization representing a large percentage of farmers in Iowa who belong to a general farm organization. Includes events, news, topics, FFA grants, conservation methods, and contact information.
- http://www.agandenvironment.com/

The Iowa Chapter of the Sierra Club
- Calendar, links to local groups. All programs and outings are open to the public.
- http://iowa.sierraclub.org/

Loess Hills Special Resource Study
- Report on a study of the prairies, forests, landforms, and other natural features of this western Iowa region, with recommendations for protective management.
- http://www.nps.gov/mwro/loesshills/

Iowa Prairie Network
- Works to educate the public about prairies and preserve them. Includes calendar of events, action alerts, and FAQ.
- http://www.iowaprairienetwork.org/

Iowa Energy Center
- A source for energy efficiency and renewable energy research and information.
- http://www.energy.iastate.edu