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Chemistry in a coffee cup: does coffee waste contain key elements for plant growth?

The “A Cup of Coffee” project, carried out by secondary school students aged 16–18 in Italy, introduces sustainability and circular economy[1] concepts through engaging STEM activities. This initiative demonstrates how coffee grounds, often discarded as waste, can become a valuable…

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A map of the stars

From notebook sketches to space-telescope data: explore how mapping starlight using the Herzsprung-Russell (H-R) diagram helps us trace the life stories of stars across the universe.

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