1.Seb, 9, asks: how long can crocodiles stay under water without coming up for air?

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2.Tilly, 8, asks: why does your skin go purple under your eyes when you’re sleepy?

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3.Niels, 10, asks: is it easier for a tornado to travel over grass or concrete?

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4.Lonnie, 7½, asks: can the sun melt all plastics?

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5.Emi, 7, asks: who invented prisons?

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Molly Oldfield hosts Everything Under the Sun, a podcast answering children’s questions. Do check out her books, Everything Under the Sun and Everything Under the Sun: Quiz Book, as well as her new title, Everything Under the Sun: All Around the World.