NASA website describing Big Bang theory and associated theories and concepts.

Good overview article on the Origins of the Earth. Make sure to check out the link to a photo gallery of black holes. Both pictures and drawings including in the gallery. Test your knowledge on fun solar system quiz.

Provides scientific explanations about Evolution and the age of the earth and providing thoughtful rebuttals from Creationist perspectives.

An interactive timeline of Earth’s creation and life on Earth. Provides good images and is arranged in an easy-to-follow layout for each time period.

For visual learners out there, this is a great tool to examine how the continents have shifted through time. Begins with Precambrian and goes into the future 250+ years. Good pictures with reference points and labels of areas you will be familiar with from geology classes.

Pictures of fossils in the different time periods. Many pictures from various angles for better familiarization of the species. Gives names, age, size and location where it was found.

Provides scientific explanations about Evolution and the age of the earth and providing thoughtful rebuttals from Creationist perspectives.

General resource from the U.S. Geologic Survey. Provides good graphics for Aquifers, Water Use, Streams, Lakes and Reservoirs and Floods and Droughts.

An interactive water cycle. Great visual for people who learn well with diagrams. Also, make sure to click on the words below the picture to get additional information on each item. Included is also the distribution of water throughout the world.

The National Water Information System supplies real-time data for groundwater, surface water, and water quality which you will be able to search by state or topic. Also statistics are based on daily, monthly and yearly data.

Good for researching water resource publications in the primary literature. Contains brief summaries and direct links to the latest research.

Environmental Protection Agency site with links to various surveys and information on river quality. Make sure to click on the National Assessment Database link. You can search by state to find the water quality data.

Non-profit organization devoted to education and protection of groundwater as a natural resource. Check out the “Get Informed” tab for groundwater basics, threats to this resource, and what you can do to get involved.

Interactive world atlas for water risk areas. Can zoom in and click on regions around the world and get a brief summary of use issues in the area.

A brief history of the drying of the Aral Sea with sequence of satellite images.

Contains short articles about water related geologic topics. It is organized alphabetically which allows for easy searching.