When to Use Quick Search:
On the left sidebar, you can "Refine Your Search" a number of different ways--including by publication date & scholarly/peer reviewed sources.
Government information can be very useful when searching a wide variety of topics. One of the easiest ways is to go to Google! After you type in your keywords, then type in site:gov (example: air pollution site:.gov) to limit your search to only government-related resources. This will include federal, state, and local resources.