Building blocks of life discovered in Bennu asteroid rewrite origin story

A gloved hand holds a vial with dust
Analyzing a precious bit of space dust no bigger than a teaspoon, the Penn State team used custom instruments capable of measuring isotopes, slight variations in the mass of atoms. Credit: Jaydyn Isiminger / Penn State. Creative Commons

Amino acids, the building blocks necessary for life, were previously found in samples of 4.6-billion-year-old rocks from an asteroid called Bennu, delivered to Earth in 2023 by NASA’s OSIRIS-REx mission. How those amino acids—the molecules that create proteins and peptides in DNA—formed in space was a mystery, but new research led by Penn State scientists shows they could have originated in an icy-cold, radioactive environment at the dawn of Earth’s solar system.

According to the researchers, who published new findings in the Proceedings of th...

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‘Molecular glue’ from this San Diego startup makes cancer self-destruct: Clinical trial begins

clinical trial
Credit: Unsplash/CC0 Public Domain

This local biotech says it has found a way to trick cancer cells into destroying themselves with its molecular glue. Now it’s putting that claim to the test. After attracting global attention from researchers and billions of dollars from Big Pharma, Neomorph announced that it has begun its first clinical trial. The molecular glue aims to treat a form of kidney cancer.

The first trial will dose one patient with the molecular glue, NEO-811, to treat clear cell renal cell carcinoma, the most common kind of kidney cancer.

In San Diego County, roughly 500 people are diagnosed with kidney cancer each year—that’s more than one new case every day, according to the California Cancer Registry...

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Is artificial general intelligence already here? A new case that today’s LLMs meet key tests

ai brain
Credit: Pixabay/CC0 Public Domain

Will artificial intelligence ever be able to reason, learn, and solve problems at levels comparable to humans? Experts at the University of California San Diego believe the answer is yes—and that such artificial general intelligence has already arrived. This debate is tackled by four faculty members spanning humanities, social sciences, and data science in a recently published Comment invited by Nature.

Computer scientist Alan Turing first posed this question in his landmark 1950 paper, though he didn’t use the term artificial general intelligence (AGI). His “imitation game,” now known as the Turing Test, asked whether a machine could pass as human in text-based conversation with humans. Seventy-five years later, that future is here.

Over the p...

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A giant star is changing before our eyes and astronomers are watching in real time

For decades, astronomers have been watching WOH G64, an enormous heavyweight star in the Large Magellanic Cloud, a galaxy visible with the naked eye from the Southern Hemisphere. This star is more than 1,500 times larger than the sun and emitting over 100,000 times more energy. For a long time, red supergiant WOH G64 looked like a star steadily reaching the end of its life, shedding material and swelling in size as it began to run out of fuel.

Astronomers didn’t think its final demise would happen anytime soon, because no one has ever seen a known red supergiant die. But in recent years, astronomers—including our team working with the Southern African Large Telescope (SALT)—discovered that this star has started to change, growing dimmer than before and seemingly warmer...

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