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 ...

This illustration shows a typewriter with the keys depicted as the periodic table. Hands are typing on it, and the sheet of paper coming out of it shows the words "Tales from the table." Credit: Chris ...

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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