In 1967, US satellites hunting secret nuclear tests detected a flash from deep space; the accidental signal became the first observed gamma-ray burst

Artist’s concept of a close-up naked-eye view of a GRB. Credit: NASA For more than half a century, gamma-ray bursts have remained one of the most puzzling events observed in space. These bursts are sudden flashes of gamma rays, a very high-energy form of light. They can appear from almost any direction in the sky…

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Researchers used a gene gun to make lettuce and tobacco produce cattle and pig myoglobin, the protein that gives meat its red colour and umami flavour

Scientists engineer lettuce and tobacco to produce myoglobin for meat alternatives Let us accept it: livestock farming is a heavy burden on the environment. Raising animal feed takes vast amounts of land and huge supplies of freshwater, and it adds to global warming by releasing methane and nitrous oxide. Many consumers also worry about animal…

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US scientists are tagging sharks with ocean sensors; every time they surface, data is sent by satellite to help forecast how strongly hurricanes may intensify

Aaron Carlisle grasps a white shark alongside a boat off the coast of Delaware (Reuters photo) Scientists in the US are testing an unusual way to collect ocean data that could eventually help improve hurricane forecasts, by using sharks as mobile ocean sensors.Researchers from the University of Delaware are attaching small electronic tags to sharks…

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Three Indian teens won a global prize for using tamarind seeds to remove microplastics from water |

What started with concerns about access to clean drinking water eventually led three Indian teenagers to an idea that could offer a remarkably simple way of tackling microplastic contamination. Vivaan Chhawchharia, Ariana Agarwal and Avyana Mehta, all 16, developed Plas-Stick, a biodegradable powder made from discarded tamarind seeds that can bind tiny plastic particles in…

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Britain is dropping 20 concrete reef cubes and 44 tons of scallop shells into the sea in the hope to bring back its native oysters who have reduced by 95% since 1800s

While one might assume that lowering huge white blocks of concrete into the sea was an attempt at dumping construction waste offshore, in Britain’s North Sea it is a conservation effort. The country is dumping 20 carefully designed structures into the deep waters to restore the population of the European native oyster, Ostrea edulis, along…

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Leonardo: Quote of the day by Leonardo da Vinci: “Iron rusts from disuse; water loses its purity from stagnation; even so does inaction sap the vigour of the mind” |

In an age of constant notifications, endless scrolling and instant entertainment, Leonardo da Vinci’s centuries-old warning about an inactive mind feels surprisingly modern. “Iron rusts from disuse; water loses its purity from stagnation… even so does inaction sap the vigour of the mind,” Leonardo wrote in his notebooks. The Renaissance polymath used familiar examples from…

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This food package can tell when meat is spoiling by changing colour from purple-red to yellow-green before the damage is obvious

A packet of meat can look fresh on the supermarket shelf even while bacteria are already multiplying inside. By the time a spoiled smell, discolouration or slimy texture becomes obvious, indicating that the meat has gone stale, the food may no longer be safe to eat.To find a solution to this, researchers at Kyushu University…

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Venus clouds may contain 60% water, challenging decades-old theories about the planet’s sulfuric acid aerosols |

Cloud aerosols on Venus contain far more water than scientists have assumed for decades, alongside comparable amounts of iron sulfate and sulfuric acid. Researchers led by R. Mogul revisited previously uncharacterised data from the Pioneer Venus Large Probe, which descended through the planet’s atmosphere in 1978, and found that the probe’s instruments had unknowingly captured…

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