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Living circuit boards built by printing bacterial transistors

It points toward a future in which computation isn’t necessarily confined to silicon. Instead, we could build living materials that sense, communicate, compute, and respond—with the “circuit board” itself made of living cells.

Electronic circuit boards carry out different operations on the basis of the configuration of their components. Now, equivalent biological circuits are engineered that compute functions on the basis of the spatial arrangement of different bacterial strains printed on a surface.

Mapping thorium’s preferred sites could pave the way for nuclear clocks

For decades, physicists have used a technique called Mössbauer spectroscopy to peer inside solid materials, revealing fine details of their surroundings by studying how their atomic nuclei absorb and re-emit gamma rays.

Through new research published in Science, a team led by Takahiro Hiraki at Okayama University has pushed this approach into entirely new territory, using visible-adjacent light instead of gamma rays to study the nuclei of thorium-229 atoms. The advance offers a promising new route toward nuclear clocks, devices that could one day keep time more precisely than anything built before.

Meteorite dust holds records of magnetism that may have helped form the sun

4.6 billion years ago, the solar system was little more than a giant ball of gas and dust. Over the next few million years, this “solar nebula” underwent a huge transformation, flattening into a disk of matter that then condensed to form the central sun and orbiting planets.

Scientists have assumed that the early solar system was shaped mainly through gravity. But a new study finds that magnetism also likely played a role.

MIT scientists have discovered records of ancient magnetism in the oldest samples of meteorites known today. The team analyzed microscopic grains embedded in a meteorite that was discovered in Antarctica in 2008. These grains, called calcium-aluminum-rich inclusions, or CAIs, originally formed during the solar system’s first 200,000 years, making the samples the oldest known solar system material.

A single neutrino caught beneath the Antarctic ice sent astronomers searching across 11 billion lightyears them to a young galaxy nicknamed the Shadow Blaster, its light bent and magnified by another galaxy standing between it and Earth

750-TeV IceCube alert led astronomers to a rare, lensed dusty starburst at redshift 2.988. The galaxy is the best candidate in the field, not a confirmed neutrino source.

Lung cancer patient became tumourfree after treatment with selenite

A patient with advanced, treatment-resistant lung cancer became tumour-free after treatment with the selenium compound selenite. This is shown in a new study from Karolinska University Hospital and Karolinska Institutet published in the journal Oncology and Therapy as a case report. The findings may contribute to increased knowledge about selenite as a possible cancer treatment.

How Unitree Robot Dogs Turned US Military Research Into A $1,600 Product

Unitree’s dominant Go2 robot dog, priced at $1,600, traces its core leg-actuator design back to quadruped research funded by DARPA and the US Army Research Laboratory at MIT and UPenn. A researcher’s published master’s thesis on the actuator design was copied by Chinese manufacturers within six months. Unitree’s founder cited that same MIT research directly in his own 2016 thesis. The technology transfer wasn’t theft. It was the predictable outcome of open academic publishing colliding with a manufacturing base that could commercialize faster than the original funders.

Unitree robot dogs owe their most important technical breakthrough to the US military, not to Chinese state industrial policy. Reuters found that Unitree based designs for its most successful robot dogs on innovations funded by DARPA and the US Army’s DEVCOM Research Laboratory, according to a Military Times report on the investigation, citing a former US defense technology official and three researchers directly involved in the original work.

The technical lineage behind Unitree robot dogs is well documented. In 2016, University of Pennsylvania researchers, including Gavin Kenneally, eliminated heavy central gearboxes and moved motors into robot legs, improving the ability to sense and respond to terrain, building on DARPA-funded work at MIT’s Biomimetic Robotics Lab. By 2019, that MIT lab unveiled the Mini Cheetah, adding strength and the ability to perform backflips. Months before that unveiling, MIT researcher Ben Katz published his master’s thesis detailing the Mini Cheetah’s actuator design. Unitree robot dogs entered mass production almost immediately after: Katz found Chinese manufacturers selling actuator copies on AliExpress within six months of his thesis going public.

Testing finds 85% of everyday personal care products contain unlabeled chemicals with suspected health hazards

A new study of sunscreens, baby lotions, shampoos, soaps and other everyday products found that nearly all contained chemicals not disclosed on their labels. Most contained at least one unlabeled chemical with known or suspected health hazards, and one in four contained a chemical that contradicted claims on the package, including “phthalate-free” products that contained phthalates. The research is published in Environment & Health.

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