Comments about #900

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Dave Dave: I think that the gasses one came up on the latest series of Only Connect ...I wonder if they got the idea from here :) (3 years, 4 months ago)

toast: Weirdly I liked the noble gases stuff - all new to me so impossible but interesting. (3 years, 8 months ago)

Well Done: Enjoyed this one. (4 years, 4 months ago)

Ryan: Really really liked the TERRX one! Wish I'd thought of that! (8 years, 5 months ago)