This site is a new electronic reference about the Earth, its natural environments, and their interaction with society. The Encyclopedia is a free, fully searchable collection of articles written by scholars, professionals, educators, and experts who collaborate and review each other's work. The articles are written in non-technical language and will be useful to students, educators, scholars, professionals, as well as to the general public.http://www.eoearth.org/

FrogWatch USA is a Citizen Science Monitoring Program that gives YOU the opportunity to help scientists conserve amphibians! Being a FrogWatch volunteer gives you the opportunity to gather information that will help increase awareness of nationwide amphibian declines that can ultimately lead to practical and workable ways to help conserve these important species - all while helping you learn more about the wetlands in your community and the calls of frogs and toads in your community! http://www.nwf.org/frogwatchUSA/

Join thousands of others in gathering valuable environmental and climate change information from across the country. Project BudBurst engages the public in making careful observations of the phenophases such as first leafing, first flower, and first fruit ripening of a diversity of trees, shrubs, flowers, and grasses in their local area. Get outside and contribute your data! http://www.windows.ucar.edu/citizen_science/budburst/

Phenology is the study of recurring plant and animal life cycle events: leafing and flowering of plants, the emergence of insects, the migration of birds. The USA National Phenology Network brings together citizen scientists, government agencies, non-profit groups, educators and students of all ages to monitor the impacts of climate change on plants and animals in the United States. Learn about the natural world while you help the planet! http://www.usanpn.org/