Most states across the US are considering or introducing age verification laws. The result right now is a mishmash of rules.

Calculating your biological age, though, is a little more complicated. Chronological age is the number of years between your birth and now ... and the tools researchers and clinicians use to measure ...

Today, archaeologists continue to use carbon-14 dating in their research. For example, the Chicago-Tübingen Expedition to Zincirli in Turkey, co-led by UChicago Prof. David Schloen and Virginia ...