Scientists Just Watched an Adult T. Rex Walk — 66.5 Million Years Later















Scientists are growing miniature human brains in labs around the world. (Yep, you read that right.) For Wired, Claire L. Evans reports on the latest research in the field of organoid intelligence, or OI, where scientists are artificially growing brain organoids from tiny human samples, whether skin, blood, teeth, or even hair. As these seed-sized globs mature, they are able to send and receive electrical signals, and even learn to remember and anticipate them. In other words, this living matter is programmable. “And this is where things get truly weird,” writes Evans.
For now, these neural computers are mostly of interest to researchers who want to work with neurons without taking on the tedious wet-lab husbandry themselves. Eventually, however, the company hopes that neurons will prove themselves to be an energy-efficient, resilient substrate for more general computing applications—including some tasks currently handled by AI, like image recognition and classification.
“When you think about what you want from AI, it’s biology,” said Brett Kagan, Cortical Labs’ chief operating officer, when I reached him over Zoom. “You want it to be self-repairing as much as possible. You want it to be adaptable. You want it to be long-lived. You want it to be energy-efficient. These are all features you get for free in biology.”
For Nautilus, Charles Digges recounts a massive undertaking begun in 1970 by the Soviet Union: As part of its science program, they decided to dig into Earth. Known as the Kola Superdeep Borehole, at 40,230 feet, it was—and is—the deepest human-made hole on the planet. While the hole didn’t go as deep as they planned, the project gave geologists a new understanding of the subterranean world and the earth’s deep continental crust—a place more alive and dynamic than they ever thought possible.
Other discoveries proved just as momentous. Nearly 22,000 feet beneath the surface, drill cores contained microscopic fossils from two dozen species of plankton that had drifted through an ancient sea more than 2 billion years ago. This showed that even after billions of years of burial deep within the continental crust, unmistakable evidence of some of Earth’s earliest life had survived. Between 16,000 and 23,000 feet, the borehole encountered saline water circulating through fractures in crystalline rocks that geologists had long considered essentially dry. Rather than groundwater that had somehow seeped miles underground, the fluids appear to have originated within the crust itself. As ancient minerals were transformed by heat and pressure, they released chemically bound water, while reactions between water and iron-rich rocks generated hydrogen gas, showing that the supposedly inert continental crust was still chemically active billions of years after it had formed.
Carleton Gajdusek won the Nobel Prize for his work on a disease in Papua New Guinea. But his biggest experiment was on the children he took from the field to the US—many of whom he sexually molested, with the knowledge and, in some cases, approval of his professional peers and colleagues:
In his journals and in letters to colleagues, Gajdusek was self-righteous, arguing that what he’d done was “no more serious than lying on the grass or picking a dandelion,” and he cited the Anga initiation rites as justification. These ceremonies had brought boys into their communities, as part of a shared passage into manhood, but Gajdusek treated them as a timeless license for the acts that he’d committed privately, one boy at a time. George Klein, a professor at the Karolinska Institute, in Stockholm, who was part of the Nobel Assembly for thirty-six years, validated Gajdusek’s opinions, telling him that he wondered if “the Western world can ‘catch up with you.’” He wrote, “I share your indignation about the typically Jewish-Christian-Moslem hypocrisy on sexual matters.” Gajdusek was troubled, though, by how many colleagues wrote letters saying that they knew the charges must be untrue. “I thought better of my friends,” he said. “They are dissimulating and lying.”
