Choosing A-Levels can feel stressful for both students and parents. Some subjects are known to be harder because they need strong maths skills, long essays, or complex problem-solving. Many families ...

Phelps, an engineer at Oak Ridge National Laboratory, works with radioactive material daily, furthering understanding of the world around us. She is best known for helping discover a periodic element, ...

On 17 February 1869, Russian chemist Dmitri Mendeleev jotted down the symbols for the chemical elements, putting them in order according to their atomic weights and inventing the periodic table. He ...

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