The biology of aging is moving faster than we expected

They boosted it through diet in aging lab organisms, and mitochondrial function slid back toward youthful patterns. The work ran in Nature Communications [8]. The same week, the NIH's Cellular Senescence Network released the first body-wide atlas of senescent cells across brain, lung, and lymph nodes, and introduced the idea of senotypes: a recognition that not all lingering, non-dividing cells are alike, and that any therapy will have to tell the harmful ones from the helpful ones [81]. And MIT Technology Review reported that David Sinclair, a biologist at Harvard Medical School, is preparing human trials of an oral drug meant to reset cells toward a younger epigenetic state, with a stated goal of showing a 10-year gain in immune, cognitive, and muscle function after a single year of treatment [244].

Household income, homeownership, neighborhood poverty, and local transit access made up 37 of the top 40 features linked to brain network function and 35 of the top 40 tied to physical brain structure. Together those measures explain 16 percent of the variation in how these children's brains work, more than any single biological or behavioral factor tested [85][99]. Once the team controlled for socioeconomic status, 70 percent of the previously seen links between brain anatomy and IQ disappeared. The work appeared in Science. Separately, a new VoxEU working paper found that staying employed in the pre-retirement years, ages 51 to 64, measurably slows cognitive decline in men, which suggests the engagement and purpose of work may protect the brain across the whole lifespan, not just at the start of it [179].

The crew is commander Randy Bresnik, ESA astronaut Luca Parmitano, and mission specialists Andre Douglas and Frank Rubio, with Bob Hines as backup [3].

The evening side is hotter and physically larger, because winds carry heat eastward in the direction of rotation, and it gets hot enough to split water into hydrogen and oxygen [5]. Using the VLT and Gemini North, another team measured winds on seven hot-Jupiter exoplanets and found that hotter planets have slower winds, the brake being stronger magnetic fields. It is the first solid detection of magnetospheres around planets beyond our solar system [329]. And Webb caught a forming galaxy cluster, CRISTAL-02, in the process of dying. Its stars are forming twice as fast as in similar galaxies, and the supernovas that follow are blasting the galaxy's own cold gas into space, a wind strong enough to kill it within 50 million years. That likely explains the long-standing mystery of early-universe galaxies that seem to have run out of time too soon [217].

Their estimate: these networks stretch 110 quadrillion kilometers and weigh about 300 megatons of carbon, four to six times the mass of every living human combined. A single teaspoon of healthy soil can hold 10 meters of these threads. They give roughly 70 percent of all plant species more than 80 percent of their phosphorus and extend a plant's foraging reach by up to 100 times [70]. Separately, a University of Bonn team published in Science the first direct evidence of where homing pigeons sense Earth's magnetic field: the liver. Iron-laden macrophages, immune cells that hoard iron from breaking down old red blood cells, sit packed against nerve fibers in the liver. When the team switched those cells off, pigeons trained on a 12-mile route through the German Alps could no longer find their way home on overcast days, when magnetic sensing was all they had. On clear days, they used the sun instead [346].

A University of Pittsburgh study tracked more than 800 teenagers through 6,000 repeated assessments over nine years, using brain-iron MRI as a stand-in for dopamine in the basal ganglia. The teens who fit the "youth peak" pattern, intense experimentation followed by a clean drop-off in their mid-twenties, had lower baseline dopamine than every other group, measured before they had tried anything. Their brains were understimulated, and the substance use was compensating [84]. Separately, a University of Toronto study found that social anxiety disorder now affects nearly 1 in 7 Canadian adults, a 71 percent jump since 2002, with the sharpest concentration in young adults: 24 percent of Canadians aged 20 to 24 meet lifetime criteria. The psychology side offered two framings that fit together. Psyche looked at how American culture singles out dependency and loneliness for shame, pushing people to hide their emotional needs even from themselves, sometimes including AI companions kept secret out of fear of looking weak [116]. Psychology Today added that when social media displaces face-to-face time, it costs us the emotional depth and trust that real relationships are built on [128][90].