Tutkijamme kehittivät ultraääniputken, jolla voi ohjata nesteen lisäksi kaasua, jauheita ja plasmaa. Putki syntyy 256 pienen kaiuttimen tuottamasta ultraäänestä. Ultraääniputkella voisi siirtää esimerkiksi syövyttäviä, tahmeita ja herkkiä aineita.

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Hokusai: Thirty-Six Views of Mount Fuji review – sublime wonders from the Great Wave to that heroic, eternal peak

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The fietsvlonder (bike platform) has been reshaping Rotterdam streets for a decade. It swaps one car parking space for a temporary structure that accommodates a dozen bicycles. If deemed successful after a few months, the curb is permanently rebuilt, and the platform moves on to the next location.

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In 2022, the EU helped broker a UN deal to halt nature loss. Four years, two wars, and a major energy crisis later, its green ambitions face a different political reality. As COP17 opens in Yerevan, can the EU still lead on nature protection? Read & find out: www.politico.eu/article/euro...

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Russia is intensifying its attacks on Ukraine’s export routes. Its aggression in the Black Sea make it harder to put food on people’s plates across the world. A Black Sea freedom of navigation arrangement would protect lives and vital supplies. Ukraine has proposed it. Russia has rejected it.

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