For decades, scientists have been counting annual growth rings—similar to tree rings—inside fossilized leg bones of ...

The National Center for Education Statistics has tracked academic progress and achievement gaps in U.S. schools for more than 150 years. Educators, policymakers, and researchers alike rely on its data ...

Understanding some statistics is important for general science literacy. Below are some common statistics resources that may be useful for your project work. To support your professional development, ...