Datasets from Princeton University's Gas Dynamics Lab

Provides air quality data for 500 U.S. cities, as well as U.S. consulates and embassies. Includes an interactive map

Provides statistics and other data relating to major energy sectors, including petroleum, natural gas, coal, nuclear, and renewables

Data Observation Network for Earth (DataONE) is the foundation of new innovative environmental science through a distributed framework and sustainable cyberinfrastructure that meets the needs of science and society for open, persistent, robust, and secure access to well-described and easily discovered Earth observational data

Also known as Data Search, find materials and properties information from technical references

Discover published datasets; provides resources to help you publish your own datasets

Search for materials by chemistry, composition, or property. Also offers computational tools that can predict properties of novel materials

A material properties database that emphasizes ease of comparison. The data are sourced from published standards, academic literature, and supplier documentation

Open data repository for data on materials and chemical information, including alloys, polymers, and semiconductors