51动漫

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Why are the lichens distributed in this way on this sign (pictured)?

The surfaces appear to have the same texture, but readers suggest looking closer 鈥� and this might explain why the lichens appear to be attracted to certain parts of the sign

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Colorful clean bed linen and towels after washing are hung on the bars of the dryer and secured with clothespins. General cleaning, Laundry drying, compact dryer for the house. Selective focus; Shutterstock ID 1795609045; purchase_order: -; job: -; client: -; other: -

This week鈥檚 new questions

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FEATURE International Space Station Airlock and Hatch

Humans

Striking images of the International Space Station and space shuttles

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Planting out sweetcorn in blocks.

Humans

How to grow the best sweetcorn you’ve ever tasted

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MIT investigates how the Oreo crumbles

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Tom Gauld scours the universe for signs of order – except on Tuesdays

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Twisteddoodles: a new approach to states of matter

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Environment

Stunning images of mollusc shells reveal their beauty and diversity

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Humans

How to spot Vega, the North Star of the future

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Why does the H sound get dropped in some languages?

Dropped Hs have been an issue since the time of Ancient Rome, say our readers, but H isn鈥檛 the only sound that鈥檚 missing form our speech

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Why, or how, do winds gust?

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Do menthol nasal decongestants still work if you can鈥檛 smell them?

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This week鈥檚 new questions

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Humans

Sighs of relief as earthquake-resistant bike saddle finally invented

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