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    1. What is the projection that the Census use for its ArcInfo files?

    2. What happened to ENTRI?

    3. I was interested in obtaining a Geographic Correspondence file, particularly Block Group to Block, for every state, containing allocation factors for Population, Land Area & Housing Units. Is it possible to obtain these .csv files directly from you?

    4. I am looking for the population and the surface area (in square kilometers) for several cities throughout the globe.  I found several datasets available in GRUMP, but I didn't find anything with both population and surface area.

    5. I divided one 30 Arc-Second (~1km) Basic Demographic Characteristics raster by another and ended up with very high values in the result.

    6. I am a graduate student. I am interested in all the chinese information and maps at your website and trying to design a small project for my class. But I find there are no information about the map projection. The administrative Region map projection is different from that of the Fundamental Maps.

    7. How is the Composite map of the Human Influence Index performed (0-64)?

    8. What were the data sources used for the 2001 ESI?

    9. What are the restrictions on use and redissemination of data?

    10. I am trying to locate maps online of the Metropolitan Statistical Areas (MSAs) for all US states and Puerto Rico and haven't had much luck. Can you tell me where I might find these maps?

    11. In reviewing the latest statistics on environmental sustainability from your website, I noted that the Faroe Islands was not listed. Could you please advise me on the criteria regarding who is included in the 2002 ESI rankings?

    12. How do I convert .BIL format in Arcview/ArcInfo?

    13. I want to visualize/mashup many of your Web Map Services in ArcGIS Online, or even ArcMap. But, I'm not having much luck with ArcGIS. Is there some guidance you can provide to help me here. I'm sure I'm not alone with this request and as ArcGIS Online is becoming more proliferate other will want to leverage your great services themselves in their own mashups.

    14. Are extreme events considered in the model?

    15. When I open a CSV file in excel, there are special characters that do not display correctly, what do I do?

    16. What has happened to .e00 format option? It appears to have been replaced by something called "grid"?

    17. I downloaded the urban extents grid from GRUMP (alpha).  When opened in ArcGIS, there are only two values 1 and 2.  What do these values mean ?

    18. What is the Human Influence Index?

    19. I would like to use your density of population to study climate impact and how affect society. In particular, the doubt is from density of population in Africa. I am extracting the .nc file from Panoply in txt and it gave me 20 raster. The question is what raster corresponds to the 2020 year?

    20. I'm looking for all of the administrative boundaries in your China Administrative map but I could not find the administrative boundary, for Chongqing.

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