Ars Technica menyoroti kisah sains yang terlupakan dari bulan April

Ars Technica telah mengompilasi enam penemuan ilmiah menarik yang nyaris terlewatkan. Rangkuman ini mencakup fisika renang lumba-lumba, perbaikan kapal Romawi, dan komunikasi jamur melalui urine. Diterbitkan pada 2 Mei, kisah-kisah ini mencakup bidang fisika, arkeologi, dan biologi.

Dalam rubrik bulanan, Ars Technica menyoroti penelitian dari bulan April yang mungkin luput dari perhatian. Di antara sorotan tersebut, para ilmuwan Jepang di Universitas Osaka menggunakan simulasi superkomputer untuk menjelaskan kecepatan lumba-lumba. Mereka menemukan bahwa cincin pusaran besar dari kepakan ekor menghasilkan sebagian besar daya dorong, sementara pusaran yang lebih kecil merupakan produk sampingan turbulen. 'Hasil kami menunjukkan bahwa hierarki pusaran dalam turbulensi sangat penting untuk memahami cara berenang lumba-lumba,' ujar rekan penulis Susumu Goto. Tim ini bertujuan untuk menerapkan temuan tersebut pada robot bawah air, sebagaimana dirinci dalam Physical Review Fluids (2026).

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Northwestern University researchers report they have printed flexible “artificial neurons” that generate realistic electrical spike patterns and can trigger responses in living mouse brain tissue. The team says the work, published April 15 in Nature Nanotechnology, could help advance brain-machine interfaces and more energy-efficient, brain-inspired computing.

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Researchers have developed a laser technique to examine the contents of Charles Darwin's original specimens from the Galápagos Islands without disturbing the nearly 200-year-old jars. The method, known as Spatially Offset Raman Spectroscopy, reveals the chemical makeup of preservation fluids inside sealed containers. This breakthrough aids museums in preserving delicate collections worldwide.

French start-up Bubble Robotics, founded in 2025, plans to test a system of subsea drones and robotic surface vessels this summer in partnership with Ifremer. Drawing inspiration from SpaceX’s « NewSpace » methods, the company aims to monitor oceans and protect critical infrastructure. Led by Jean Crosetti and Patricia Apostol, it pursues this vision.

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Researchers at the Princeton Plasma Physics Laboratory have identified plasma rotation as the key factor explaining why particles in fusion tokamaks strike one side of the exhaust system more than the other. Their simulations, which matched real experiments, combined rotation with sideways drifts. The discovery could improve designs for future fusion reactors.

Scientists at Arizona State University have identified two unexpected ways bacteria can spread without their usual flagella structures. In one study, E. coli and salmonella use sugar fermentation to create fluid currents for surface migration, dubbed 'swashing.' A separate study reveals a molecular 'gearbox' in flavobacteria that controls directional movement.

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Researchers have demonstrated that the single-celled protist Stentor coeruleus can engage in associative learning, similar to Pavlov's experiments with dogs. This finding suggests such cognitive abilities may predate the evolution of brains by hundreds of millions of years. The study highlights unexpected complexity in simple organisms.

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