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The cat sleeps more. It jumps up onto things less. It takes longer to get comfortable and doesn’t race around the way it used to. This reads as an obvious story: the animal is getting old. It’s natural. It’s expected. Most owners I know accept this narrative without a second thought because it’s tidy and it requires nothing of them.

What veterinary research keeps saying, with increasing insistence, is that the tidy narrative is almost certainly wrong.

The numbers are difficult to ignore

Studies consistently find that between 64% and 92% of cats over the age of ten have arthritis. By the time a cat reaches twelve, the figure for osteoarthritis alone is around 90%. In cats older than fourteen, 82% show joint involvement in imaging studies. These are not marginal findings from a single outlier study. They replicate across research institutions and countries.

The gap between those numbers and what most cat owners believe about their pets is enormous. And it exists almost entirely because cats are extraordinarily good at not telling you they are hurting.

Why cats conceal pain

This is not stubbornness or stoicism in any meaningful sense. It is evolutionary architecture. Cats occupy an unusual ecological position — they are predators, but they are also prey. A wild cat that signals injury or weakness invites attack. Over millions of years, the ones that survived were the ones that showed nothing.

That instinct does not disappear in a domestic animal sleeping on a heated blanket in a flat in Amsterdam. The cat that is quietly arthritic does not limp dramatically, does not vocalise its pain, does not do anything that reads obviously as suffering. It just… adjusts. It stops jumping to the high shelf. It grooms itself less around the hips. It finds a position and stays in it. To an owner watching casually, this looks indistinguishable from the ordinary changes of age.

Researchers from the University of California Davis and others have noted that owners frequently report these behavioural changes during routine vet visits, describe them as age-related, and don’t flag them as pain indicators — because they don’t know that’s what they are. The cat isn’t complaining. The owner isn’t alarmed. The pain goes unmanaged.

What to actually look for

The clinical picture of a cat in chronic pain is subtle, almost by design. The American Animal Hospital Association lists the signs: reduced activity, reluctance to jump, changes in grooming patterns, altered sleep positions, irritability when touched in certain places, and withdrawal from interaction. None of these is dramatic. All of them can be read as “just getting older.”

The distinguishing question a vet will ask is not whether any of these things are happening but whether they represent a change from the cat’s baseline. A cat that has always been calm and low-energy is probably fine. A cat that used to leap to the windowsill every morning and now doesn’t is a different conversation.

The treatment gap

There is now a real and expanding range of interventions for feline chronic pain — including newer monoclonal antibody treatments specifically approved for cats — but they require a diagnosis, which requires a vet visit, which requires an owner who suspects something is wrong.

That chain breaks at the first link when owners are operating on the assumption that the slowdown is natural. I find myself thinking about how many cats are spending years in unmanaged pain while their owners interpret the stoicism as contentment. The cat doesn’t complain. The owner assumes it’s fine. Nobody’s lying. But the outcome is the same as if both of them were.

If your cat is over ten and has changed its movement patterns in the last year or two, the veterinary consensus is clear: don’t wait for obvious signals. The species you’re dealing with evolved specifically not to give you any.

The post Most cat owners I know assume their older cat is just slowing down with age — veterinary research suggests up to 92% of cats over ten have arthritis, and most are hiding it appeared first on Space Daily.

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8BitDo announced a new version of its all-button Arcade Controller that debuted a little over a year ago. The new Arcade Controller Pro looks similar to 8BitDo's original with a leverless (or Hitbox) design that replaces joysticks with buttons for improved precision and responsiveness. The new Pro version comes with upgrades that include an even thinner 16mm design, an additional programmable button, and a small screen allowing you to customize button mapping and other settings without having to open 8BitDo's Ultimate Software V2 app on another device - although that's supported, too.

Pricing, availability, and preorder timing for the Arcad …

Read the full story at The Verge.

Zoox, the autonomous vehicle company owned by Amazon, unveiled a new look for its boxy, bidirectional robotaxi, calling it the "next evolution" of the vehicle intended for mass production. The company is currently operating a free robotaxi service in San Francisco, Las Vegas, Austin, and Miami while it waits for the federal government to approve its request for an exemption from safety rules that require production vehicles to have traditional controls, like steering wheels and pedals.

While other robotaxi operators have typically relied on vehicles with familiar nameplates for their fleets, Zoox is unique in its embrace of a purpose-built …

Read the full story at The Verge.

They’re evolving faster than we can stop them

The post How City Rats Are Becoming Resistant to Poison appeared first on Nautilus.

One of the world’s leading technology companies, Nvidia, has just unveiled a new data center cooling system that uses a liquid coolant hotter than a hot tub to cut energy consumption.

The Californian company’s latest Rubin platform can operate using liquid coolant at temperatures up to 113 degrees Fahrenheit (45 degrees Celsius). The approach greatly reduces the need for energy-intensive chillers and cooling infrastructure.

According to the company, the feat is part of the DSX AI factory reference design, which introduces fully liquid-cooled infrastructure throughout the entire system. Every processor, networking part, and high-performance computing element is cooled by liquid in a closed-loop system.

Ali Heydari, Nvidia data center cooling and infrastructure director, noted that the DSX AI factory design reduces nearly all water use and cuts a substantial amount of the power necessary for cooling. “With dry-cooler-based designs, it’s a closed-loop system with no evaporative water cooling – outside of maybe one percent of the year when we might need chillers in some climates,” he added.

A new cooling method

Cooling has accounted for up to 40 percent of total power demand. Traditional data centers utilize large volumes of cooled air to remove the heat generated by servers. This requires extensive cooling infrastructure, like fans, chillers, cooling towers, and carefully managed hot and cold aisles.

Meanwhile, Nvidia’s Rubin platform captures heat directly at the chip level. It can reportedly reduce cooling water consumption from about 2.6 million gallons per megawatt per year to almost zero in suitable climates.

The system relies on a liquid coolant made up of 75 percent water and 25 percent propylene glycol, which circulates through cold plates attached to processors. The liquid enters at temperatures of up to 113 degrees Fahrenheit and exits at about 131 degrees Fahrenheit (55 degrees Celsius), once it absorbs the heat generated by the chips.

Since the heat is removed directly from the source, the processors can continue operating at full performance even with much warmer coolant temperatures than traditional cooling systems would allow.

Lower energy and water use

As per Nvidia, the higher operating temperatures unlock considerable efficiency gains. Industry estimates suggest that increasing chiller temperatures by just 1.8 degrees Fahrenheit (one degree Celsius) can reduce cooling energy costs by four percent. In practice, this means that a 50-megawatt hyperscale facility can save more than USD four million per year in cooling-related energy and water costs by adopting liquid-cooled infrastructure.

“In the right geographic location, with the right system design, you don’t need any refrigeration equipment,” Richard Whitmore, president and CEO of Motivair, Schneider Electric’s advanced cooling division, pointed out. “You can just put big radiator coils outside and use the air temperature for all your cooling.”

The move to complete liquid cooling also required a major server redesign. Earlier liquid-cooled servers used a hybrid approach, cooling CPUs and GPUs with cold plates while relying on air cooling for other components.

Nvidia engineers reworked cooling pathways across the entire server and created a system that uses a single liquid loop to cool multiple high-power components. The redesign has also improved space efficiency. The company revealed that fully liquid-cooled servers can reach higher rack densities.

This allows more computing power to fit into a smaller footprint. “Once the watts per chip crossed a certain level, liquid cooling became mandatory,” Whitmore concluded in a press release.