# Public Evidence Project > Source-linked guides and public records about U.S. data-center permits, equipment, reported operations and environmental public-comment deadlines. ## Start with a question - [Data-center reading guides](https://publicevidence.org/guides): Plain-language starting points for air permits, backup generators, electricity use and local generator records. - [Evidence index](https://publicevidence.org/index): Search public records and follow their source documents. - [U.S. data centers](https://publicevidence.org/us/data-centers): National public-record desk and subject directories. - [State directories](https://publicevidence.org/us/data-centers/states): Browse the national records by state. - [Project dossiers](https://publicevidence.org/projects): Project-level evidence and source crosswalks. ## Inspect the evidence - [Equipment](https://publicevidence.org/equipment): Equipment groups, ratings and controls stated in permit documents, with page-level citations. - [Reported operations](https://publicevidence.org/reported-operations): EPA emissions inventory and EIA generation records with reporting periods, units and identity tiers. - [Virginia permits](https://publicevidence.org/virginia/data-centers): Virginia air-permit records and local directories. - [Official sources](https://publicevidence.org/data/sources): Agency source systems and coverage. - [Research](https://publicevidence.org/research): Source-linked research summaries and evidence context. - [Environmental deadlines](https://publicevidence.org/us/environmental-comment-deadlines): Dated Federal Register snapshot; check the displayed source sync date and controlling notice. ## Reuse and follow - [Data and downloads](https://publicevidence.org/data): Published data files and field information. - [Reuse and API](https://publicevidence.org/reuse): Data-access and attribution information. - [Researcher and journalist resources](https://publicevidence.org/resources): Citation, methodology and source materials. - [National records RSS](https://publicevidence.org/feeds/data-center-records.xml): Feed of the published national record collection. - [Permit updates RSS](https://publicevidence.org/feeds/permit-updates.xml): Changes from the published permit snapshot. - [Deadline RSS](https://publicevidence.org/feeds/environmental-deadlines.xml): Records from the dated environmental-deadline snapshot. ## Method and participation - [Methodology](https://publicevidence.org/methodology): Acquisition, identity handling, source coverage and interpretation limits. - [Corrections](https://publicevidence.org/corrections): Corrections and version information. - [Participate](https://publicevidence.org/participate): Contributions, preferences and review routes. - [About](https://publicevidence.org/about): Project purpose and organisational information. Permits, inventory-reported emissions and energy estimates describe different evidence layers. Keep source dates, units, identity tiers and original agency links with any citation. A snapshot can be stale; the controlling notice and official docket determine actual submission dates. ## Optional - [Privacy](https://publicevidence.org/privacy): Privacy and cookie information. - [Sitemap](https://publicevidence.org/sitemap.xml): Published public-page discovery.