This category contains links to state-level resources for agriculture. This category NOT contain links related to agriculture businesses, such as growers, co-operatives (co-ops).

Includes links to state-level resources regarding wildlife within the State of Illinois.

This category points to Science and Environment categories within Illinois counties.

This category points to Science and Environment categories within Illinois localities.

Includes links to state-level sites related to plant life in the State of Illinois, also known as the Prairie State.

Includes links to sites related to the Prairie State's prairies, simple enough.

Water "resources" are the waters that people use or might use for human consumption, industry, etc. This translates to "all waters other than the oceans" and the category includes all scientific aspects of those waters. Topics may include Illinois-based hydrology, water supply, water distribution, water quality, wastewater, flooding, surface water (rivers, streams, and lakes), groundwater, drinking water, water treatment technology, water policy, and ???