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USGS Frequently Asked Questions
FAQ's about Environment
What should I do if tests show elevated radon levels in my home?
How does radon get into buildings?
What can be done to prevent or clean up mine drainage?
Should I be concerned about radon in my house?
Are there regulatory limits for safe levels of elements in our environment?
How does mine drainage occur?
Why is radon considered a health hazard?
What is mine drainage?
What is the U.S. Geological Survey's responsibility related to mining and the environment?
Where can I obtain information about radon in my area?
Could you provide me with information on the problems in the Salton Sea?
Why are some lakes I see full of algae and thick plants?
What problems are associated with mine drainage?
Is it true that water coming out of sewage treatment plants is used for other purposes?
I read in the paper that frogs and toads are becoming scarce and that many of them have extra legs and other deformities. Is this a sign of disease that is causing them to die?
Why can't we use zebra mussels' filtering abilities to our advantage by using them to help clean our water? Are they edible? Can zebra mussels be of benefit to humans in any way?
What is Radon?
What elements are harmful to living organisms and how do they get into our environment?
Where does our household water go after we are done with it?
Why do animals become endangered?
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U.S. Geological Survey