Retailers are being urged to stop making everyday products such as drinks bottles, outdoor furniture and toys out of brightly coloured plastic after researchers found it degrades into microplastics faster than plainer colours. From a report: Red, blue and green plastic became “very brittle and fragmented,” while black, white and silver samples were “largely unaffected” over a three-year period, according to the findings of the University of Leicester-led project. The scale of environmental pollution caused by plastic waste means that microplastics, or tiny plastic particles, are everywhere. Indeed, they were recently found in human testicles, with scientists suggesting a possible link to declining sperm counts in men.

In this case, scientists from the UK and the University of Cape Town in South Africa used complementary studies to show that plastics of the same composition degrade at different rates depending on the colour. The UK researchers put bottle lids of various colours on the roof of a university building to be exposed to the sun and the elements for three years. The South African study used plastic items found on a remote beach. “It’s amazing that samples left to weather on a rooftop in Leicester and those collected on a windswept beach at the southern tip of the African continent show similar results,” said Dr Sarah Key, who led the project. “What the experiments showed is that even in a relatively cool and cloudy environment for only three years, huge differences can be seen in the formation of microplastics.” This field study, published in the journal Environmental Pollution, is the first such proof of this effect. It suggests that retailers and manufacturers should give more consideration to the colour of short-lived plastics.

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Witnessing the blood-red fires of a volcanic eruption on Earth is memorable. But to see molten rock bleed out of a volcano on a different planet would be extraordinary. That is close to what scientists have spotted on Venus: two vast, sinuous lava flows oozing from two different corners of Earth’s planetary neighbor. From a report: “After you see something like this, the first reaction is ‘wow,'” said Davide Sulcanese, a doctoral student at the Universita d’Annunzio in Pescara, Italy, and an author of a study reporting the discovery in the journal Nature Astronomy, published on Monday. Earth and Venus were forged at the same time. Both are made of the same primeval matter, and both are the same age and size. So why is Earth a paradise overflowing with water and life, while Venus is a scorched hellscape with acidic skies?

Volcanic eruptions tinker with planetary atmospheres. One theory holds that, eons ago, several apocalyptic eruptions set off a runaway greenhouse effect on Venus, turning it from a temperate, waterlogged world into an arid desert of burned glass. To better understand its volcanism, scientists hoped to catch a Venusian eruption in the act. But although the planet is known to be smothered in volcanoes, an opaque atmosphere has prevented anyone from seeing an eruption the way spacecraft have spotted them on Io, the hypervolcanic moon of Jupiter. In the 1990s, NASA’s spacecraft Magellan used cloud-penetrating radar to survey most of the planet. But back then, the relatively low-resolution images made spotting fresh molten rock a troublesome task.

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An anonymous reader shares a report: Similar to the GCC compiler dropping support for the Xeon Phi Knights Mill and Knights Landing accelerators a few days ago, Intel has also gone ahead and seen to the removal of Xeon Phi support for the LLVM/Clang 19 compiler. Since earlier this year in LLVM/Clang 18 the Xeon Phi Knights Mill and Knights Landing support was treated as deprecated. Now for the LLVM 19 release due out around September, the support is removed entirely. This aligns with GCC 14 having deprecated Xeon Phi support too and now in GCC 15 Git having the code removed.

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It’s the best time of the year to pick up all the tents, stoves, sleeping bags, and gear you’ll need for summer fun. Just remember these deals end tonight.

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“Merged this Friday evening into the Linux 6.10 kernel is the new mseal() system call for memory sealing,” reports Phoronix:

The mseal system call was led by Jeff Xu of Google’s Chrome team. The goal with memory sealing is to also protect the memory mapping itself against modification. The new mseal Linux documentation explains:

“Modern CPUs support memory permissions such as RW and NX bits. The memory permission feature improves security stance on memory corruption bugs, i.e. the attacker can’t just write to arbitrary memory and point the code to it, the memory has to be marked with X bit, or else an exception will happen. Memory sealing additionally protects the mapping itself against modifications. This is useful to mitigate memory corruption issues where a corrupted pointer is passed to a memory management system… Memory sealing can automatically be applied by the runtime loader to seal .text and .rodata pages and applications can additionally seal security-critical data at runtime. A similar feature already exists in the XNU kernel with the VM_FLAGS_PERMANENT flag and on OpenBSD with the mimmutable syscall.”
The mseal system call is designed to be used by the likes of the GNU C Library “glibc” while loading ELF executables to seal non-writable memory segments or by the Google Chrome web browser and other browsers for protecting security sensitive data structures.

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