Joints that learn to grow young, Language is older than we thought

When they blocked it in old mice, cartilage grew back. When they exposed human tissue samples collected during knee replacement surgeries to the same treatment, those decades-old cells started producing new cartilage again. The mechanism is unusual: unlike most tissues, cartilage does not regrow through stem cells. Instead, the existing cartilage-producing cells, called chondrocytes, appear able to shift their gene activity and return to something like a younger state [8]. The same week, MIT Technology Review reported that Life Biosciences had just injected its first human patient, a person with glaucoma, with a treatment designed to regenerate nerve cells in the eye using a similar cellular reprogramming approach, and that the biotech sector is betting billions on this idea [114].

These switches predated the divergence of modern humans from Neanderthals, which means the biological architecture that makes language possible was already in place before our species existed as a distinct lineage [11]. Separately, Project CETI, the Cetacean Translation Initiative, published findings showing that Eastern Caribbean sperm whales produce clicks with regular rhythmic patterns and overlaid frequency patterns, structured exactly the way human consonants and vowels are structured: pulses plus frequency shaping. Two species, separated by hundreds of millions of years of evolution, arrived at the same basic phonological solution [81].

The same week, a Chinese deep-sea research team returned from the Diamantina Fracture Zone, a vast ocean canyon 7 kilometers deep off southwestern Australia, with a census of 476 fossilized whale skulls and bones dating back 5.26 million years, along with five living whale falls, entire ecosystems of bone-eating worms and chemosynthetic clams blooming on fresh carcasses in the dark [152].

Industrial fishing, trawling, and mining are now prohibited. A separate study reported that the world's mangrove forests, which had been declining sharply since the 1980s, have been gaining more area than they lose for 16 consecutive years, with a net decline over 40 years of only 1% [145]. In California, a 31-year-old marine restoration director named Kaysha Kenney has collected 24,000 pounds of discarded oyster shells from Orange County restaurants, cured them outdoors for six months to remove pathogens, and planted them as settlement substrate for new oysters in bays where reefs once shaped the entire character of the coastline [150]. And at the University of Rochester, a team published a solar desalination process that produces fresh water from any ocean without chemical additives, self-cleans using the physics of the coffee-ring effect, and recovers extracted minerals, including lithium, from the leftover salt [140].

The effect held across different task difficulty levels. The researchers called it "agency decay": a slippage from occasional use toward reliance that happens faster than users expect [68]. The second study came from the First Proof project: the most rigorous AI mathematics test ever run, with ten research-level problems that had never been published anywhere, graded by a jury of 30 expert mathematicians, and the AI systems required to work autonomously. All four participating models failed. Human mathematicians who had solved the same problems in their own research had done so [17].

The field was largely ignored for most of the 20th century. Then a 2021 Nobel Prize and new imaging tools that could map these signals across the whole body turned it into one of the fastest-moving areas in neuroscience, with implications for how we understand and treat chronic pain, obesity, anxiety, and depression [115]. Psychology Today covered the downstream side: a review of dietary interventions for PTSD, which work through the gut-brain axis. What you eat changes the microbiome, which produces serotonin, dopamine, and GABA, the same neurotransmitters targeted by psychiatric drugs. Blueberries, omega-3 fatty acids, and Vitamin E are associated with reduced PTSD symptoms; sugar, fried food, and refined carbohydrates with worse outcomes [77].