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Chemistry [31], Education [8], Environment [44], Everyday Science [17], Health [9], Mental Health [10], Physical Health [17], In Fiction [9], Manufacturing & Engineering [32], Space [34], Tech [37]

Chemistry [31]

Education [8]

Environment [44]

Everyday Science [17]

Health [9]

In Fiction [9]

Manufacturing & Engineering [32]

Space [34]

Tech [37]