Ancient brains can survive burial for millennia, and roads got far safer

Oxford paleobiology researcher Alexandra Seviour and her team think they've finally figured out why. About a third of these brains are found in waterlogged, oxygen-poor ground, riverbeds, flooded caves, sunken shipwrecks, conditions everyone assumed would accelerate decay, not stop it 11. To test the idea, the team buried mouse carcasses in four different water and oxygen environments and tracked their decay chemistry over six months, dissecting brains at set intervals and running high-resolution mass spectrometry to see which proteins survived. What they found was that preservation isn't a rare fluke; it's a distinct chemical pathway where the same reactions that normally degrade tissue instead weld the breakdown products together into something tougher than the original 11.

What's new is the growing evidence that this repair machinery, not just damage itself, might be the thing that actually determines how long and how healthily we live. Researchers have been comparing centenarians' genomes against famously long-lived species like bowhead whales, which can live over 200 years, and naked mole rats, and finding a wide variety of molecular maintenance systems doing the heavy lifting 31. A "master regulator" of repair discovered in 2023 suggests these fix-it systems can be boosted together rather than one at a time. "If you can reduce DNA damage, you would probably have a dramatic effect on the aging process," says Paul Robbins, who directs the Nathan Shock Center on Genome Integrity and Aging at the University of Minnesota 31.

The 102 participants, recruited from aging-in-place villages and retirement communities, were all over 59 and had noticed their own memory slipping without a formal dementia diagnosis. They picked their own reading material and writing topics, and kept the math deliberately easy so it wouldn't trigger anxiety. After 12 weeks, the group showed measurable improvements on cognitive test scores 98. The logic behind it, called cognitive reserve theory, holds that mentally demanding tasks that engage several brain networks at once, the way reading aloud stacks visual and auditory processing with intense focus, build a buffer against age-related decline better than single-skill brain games do 98.

But new data released last month show something remarkable underneath that grim baseline: between 2011 and 2025, the rate at which the world's roads killed people, measured against population, fell 21 percent, even as more than a billion additional vehicles joined the roads 108. It traces back to a doctor named William Haddon Jr., who in the 1960s rejected the idea that crashes were simply "accidents" caused by bad drivers, and instead treated them as a predictable engineering problem, like any other cause of injury, with fixable variables. That reframing eventually produced everything from stop signs and crosswalks to crumple zones and seatbelt laws, the same fight that recently got four stop signs painted at a Brooklyn intersection after a 10-year-old girl was hit there 108.

Female orb-weavers carry multiple distinct silk glands, each doing a different structural job, and researchers have spent decades trying to understand and reproduce that precision. Now biomaterials scientists are adapting it for genuinely medical uses: spider silk's combination of strength, flexibility and biocompatibility makes it a candidate material for wound dressings and for drug delivery systems that need to hold their shape in the body without triggering an immune reaction 120.

After years of pressure from scientists and welfare groups including Compassion in World Farming, and 42,000 emails protesting the farm in the last six weeks alone, the company has confirmed it will not proceed 184. "Beyond the serious animal welfare concerns, Nueva Pescanova's project posed major sustainability and food security concerns," marine biologist Elena Lara of Compassion in World Farming told VegNews, pointing to the added pressure on already stretched wild fish populations that supplying the farm would have required 184.

It's a serious piece of engineering: too tall for a cat to jump, capped with a claw-proof hood, buried with a rubber skirt to stop pigs from digging under it, and woven from metal mesh fine enough that no rat can slip through 195. Four years later, endangered Newell's shearwaters, red-footed boobies, red-tailed and white-tailed tropicbirds, great frigatebirds, Hawaiian petrels and Laysan albatrosses are raising chicks meters from nest sites that used to double as their graves. A similar $1.7 million fence on Oahu quadrupled the number of Newell's shearwater chicks within its first few years 195.

Through April of this year, New York City recorded its lowest monthly homicide count in data going back to 1960, and Philadelphia, Baltimore, New Orleans and Chicago all posted historic lows too 201. Nationally, the US may be at or near the lowest homicide rate the FBI has ever recorded. What makes it strange is that it's happening during reduced police staffing, elevated gun availability, and persistent poverty, the exact conditions that would usually predict the opposite 201.