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    A recent study found biodiverse playgrounds improved children's immune markers in 28 days. Forest soil and plants beat sterile rubber and gravel.
    📅Today's FactWednesday 29th April 2026

    A recent study found biodiverse playgrounds improved children's immune markers in 28 days. Forest soil and plants beat sterile rubber and gravel.

    This fact means that within just 28 days, children playing on playgrounds with natural elements like soil and plants had a better-balanced immune system than those on playgrounds with artificial surfaces. It's interesting because it suggests that simply getting children back to nature, even in urban

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