Helpful hints about our website?

Would you like to tell us how we can improve our website? Have you noticed an error somewhere? Well, we look forward to hearing about it from you! Please direct any questions concerning environmental topics to our help desk (Bürgerservice), which you'll find on the right side of our website by clicking on the "Ask UBA" button. Thank you very much!

Is it a broken link or has a gremlin crept in? We would appreciate it if you could tell us so that we may quickly correct the error.
Perhaps we do not have what you are looking for, or it is very hard to find. Please tell us what you were looking for and where.
Does the category of something you found on the website seem illogical? Are you experiencing problems with your search? Where can we improve so you can get your results faster?
four plus two equals
Solve this math question and enter the solution with digits. E.g. for "two plus four = ?" enter "6".