Another weekend has arrived, and that means new hints are popping up in Cookie Jam. If you’re stuck on “Au on the periodic ...

Scientists have found that our bodies need 28 different elements to function properly. These are almost one-quarter of the periodic table and are mainly found in the first four periods.

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The Elements series is an international treasure” - Cass R. Sunstein, Harvard Professor of Law    - Cambridge Elements have been downloaded over 6.8 million times  - Accessible, student-friendly and p ...