The following problems were sent to us by the MAA. These example problems are copyrighted by the MAA and are reproduced here under the principle of fair use for the benefit of high school students who ...

Update 2 Codeforces problems with different difficulty everyday except Sunday in the file daily_problems/${YYYY}/${MM}/${MMDD}/problems.md with hints. Update the ...

This study guide for the Chemistry Olympiad contains summarized concepts and examples in all areas of chemistry. The chapters are arranged in a logical manner and establishes connections between ...

Scientists unveil molecular map that could unlock new treatments for heart and lung diseases The map uncovers how an important human receptor involved in blood clotting and inflammation works. This ...