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In a new study, humans displayed sympathy towards and protected AI bots who were excluded from playtime.

In a new study, humans displayed sympathy towards and protected AI bots who were excluded from playtime.

Researchers have developed a novel training protocol for brain-computer interfaces in a study with rhesus monkeys. The method enables precise control of prosthetic hands using signals from the brain alone. Researchers were able to show that the neural signals that control the different hand postures in the brain are primarily important for this control, and not, as previously assumed, signals that control the movement's velocity. The results are essential for improving the fine control of neural hand prostheses, which could give paralyzed patients back some or all of their mobility (Neuron).

Researchers have developed a novel training protocol for brain-computer interfaces in a study with rhesus monkeys. The method enables precise control of prosthetic hands using signals from the brain alone. Researchers were able to show that the neural signals that control the different hand postures in the brain are primarily important for this control, and not, as previously assumed, signals that control the movement's velocity. The results are essential for improving the fine control of neural hand prostheses, which could give paralyzed patients back some or all of their mobility (Neuron).

Researchers introduce an innovative approach to image luminescence lifetimes. This simple approach uses readily-available cost-effective equipment, paving the way for advanced studies of chemical dynamics in environmental and biological systems. For example, it allows to record oxygen dynamics with much higher temporal and spatial precision.

Novel chemical compounds from a fungus could provide new perspectives for treating colorectal cancer, one of the most common and deadliest cancers worldwide. Researchers have reported on the isolation and characterization of a previously unknown class of metabolites (terpene-nonadride heterodimers). One of these compounds effectively kills colorectal cancer cells by attacking the enzyme DCTPP1, which thus may serve as a potential biomarker for colorectal cancer and a therapeutic target.

Scientists have discovered toxic 'Forever Chemicals' present in samples of drinking water from around the world.

Scientists found that cellulose diacetate foam (CDA) is the fastest degrading bioplastic in an ocean environment. This new foam material is demonstrated to be a viable replacement for Styrofoam products and single-use plastics, like food packaging trays, as it achieves all the benefits of plastic but doesn't contribute to plastic pollution. This biodegradable bioplastic foam was evaluated in a flow-through seawater tank. After 36 weeks, the CDA foam lost 65-70% of its mass, and the degradation rate of the CDA foam was 15 times faster than solid CDA.

In a pilot study, researchers have used artificial intelligence to detect antibiotic resistance in bacteria. This is an important first step toward integrating GPT-4 into clinical diagnostics.

A new study opens the door to cutting-edge solutions that could contribute to the realization of a system capable of processing quantum information in a simple yet powerful way. The work presents a method for manipulating the photonic states of light in a never-before-seen way, offering greater control over the evolution of photon propagation. This control makes it possible to improve the detection and number of photon coincidences, as well as the efficiency of the system.

A new study opens the door to cutting-edge solutions that could contribute to the realization of a system capable of processing quantum information in a simple yet powerful way. The work presents a method for manipulating the photonic states of light in a never-before-seen way, offering greater control over the evolution of photon propagation. This control makes it possible to improve the detection and number of photon coincidences, as well as the efficiency of the system.

By combining visible light and electrochemistry, researchers have enhanced the conversion of carbon dioxide into valuable products and stumbled upon a surprising discovery. The team found that visible light significantly improved an important chemical attribute called selectivity, opening new avenues not only for CO2 conversion but also for many other chemical reactions used in catalysis research and chemical manufacturing.

It is usually not possible to look inside cloudy liquids, but researchers have now managed to do so.

Imagine tires that charge a vehicle as it drives, streetlights powered by the rumble of traffic, or skyscrapers that generate electricity as the buildings naturally sway and shudder. These energy innovations could be possible thanks to researchers developing environmentally friendly materials that produce electricity when compressed or exposed to vibrations.

UPDATE:  The verification is almost complete. From the Times of Israel:

Channel 12 publishes what it says is a police document showing that one of the identification tests conducted earlier today regarding the body of a dead terrorist, apparently on the basis of photographic dental comparisons, found a “full match” to Hamas leader Yahya Sinwar.

This is amazing, and, given reports that the head of Hamas was scuttling around Gaza’s tunnels surrounded by hostages (and a bunch of explosives to blow them all up if the IDF tried to get Sinwar), it’s doubly striking—as well as heartening.  Click to read from the Times of Israel: (it’s also reported in the NYT):

From the ToI:

The Israel Defense Forces said Thursday it was working to confirm that one of three terrorists its forces had killed in Gaza was Hamas terror chief Yahya Sinwar, as a senior Israeli official said it was very likely that a body found at the scene was that of the October 7 mastermind.

The official said that the security establishment assesses that there was a “high likelihood” that the terrorist killed by the IDF was Sinwar.

“At this time, the identity of the terrorists cannot be confirmed,” the IDF said in a statement.

However, since the IDF is very cautious about these things, the “high likelihood” statement carries some weight.  There’s a bit more:

Hebrew media reports said the IDF troops were not targeting Sinwar and did not know he might be in the building where they were operating.

The army noted that there were no hostages present in the area where the three terrorists were killed. There have been reports that Sinwar has been hiding among hostages throughout the war, using them as human shields.

“The IDF and Shin Bet forces operating in the area continue to operate under the necessary caution,” the army said.

The terrorists were killed when troops opened fire on a group of combatants on the ground floor of a Gaza building in an incident that began on Wednesday.

A strike was ordered against the building, which partially collapsed the structure. When the soldiers subsequently entered the building, they realized that one of the dead terrorists “looked very much like” Sinwar.

If it was Sinwar, it is serendipity, and the fact that no hostages were present in the area is fantastic.  The NYT adds this:

The Israeli military said on Thursday that it was assessing whether Yahya Sinwar, the leader of Hamas and a mastermind of last year’s Oct. 7 terror attack in Israel, had been killed. Eliminating Mr. Sinwar has been a major goal of Israel’s military offensive in Gaza, and his death would be a watershed in almost 13 months of fighting that have reshaped the Middle East.

The military released no further details. But four Israeli officials said the military was taking the body of a slain militant to a laboratory in Israel in order to assess whether its DNA matches that of Mr. Sinwar, who is in his early 60s. Three of the officials said the militant had been killed on Wednesday in a firefight with Israeli soldiers.

For months, Mr. Sinwar has escaped Israeli efforts to find and kill him, even as many of his top allies — including much of the leadership of Hezbollah, the Lebanese militia, and Ismail Haniyeh, Hamas’s former political leader — have been assassinated.

Mr. Sinwar’s death, if confirmed, could raise hopes for an end to the conflict in Gaza, by encouraging Hamas to agree to Israeli demands or by providing Israel with a victory that could push Prime Minister Benjamin Netanyahu to ease its negotiating stance. Hamas and the Israeli government have remained far apart on key issues during months of negotiations over a truce.

Here is a photo from the Polish website balconik.com showing the match of Sinwar’s teeth when he was alive (left) with the teeth of the body (other gruesome bits omitted). It’s a pretty good match. (You can see more photos, some you might find disturbing, here.)

This is the best chance yet for an end to the war–assuming that Hamas will fold given that both its political and military leaders have been killed by the IDF.  I would hope that Hamas would surrender unconditionally and release all the hostages, as they have no credible leadership.

As an addendum, remember that Sinwar (now 61) was an Israeli prisoner, doing a life sentence for multiple murder of both Israelis and Palestinians suspected of collaboration.  He got a brain tumor, and an Israeli doctor saved his life by removing it. He was then released in a prisoner swap when over a thousand Palestinian terrorists were exchanged for a single Israeli soldier, Gilat Shalit. No matter that an Israeli doctor saved his life, for Sinwar vowed to kill him and his countrymen after release.

This is still a developing story, but I am optimistic that, if true, this portends an end to the war in Gaza and the release of the hostages. Fingers crossed!

A mouse's tumours, scales from a butterfly's wings and a smiling cross-section of a bracken fern are some of the incredible images from the Nikon Small World photography competition

People who went from using social media for at least 2 hours a day to just 30 minutes a day reported no improvement to their sleep or emotional well-being

I wrote earlier this week about the latest successful test of Starship and the capture of the Super Heavy booster by grabbing arms of the landing tower. This was quite a feat, but it should not eclipse what was perhaps even bigger space news this week – the launch of NASAs Clipper probe to Europa. If all goes well the probe will enter orbit around Jupiter in 2030.

Europa is one of the four large moons of Jupiter. It’s an icy world but one with a subsurface ocean – an ocean that likely contains twice as much water as the oceans of Earth combined. Europa is also one of the most likely locations in our solar system for life outside Earth. It is possible that conditions in that ocean are habitable to some form of life. Europa, for example, has a rocky core, which may still be molten, heating Europa from the inside and seeding its ocean with minerals. Chemosynthetic organisms survive around volcanic vents on Earth, so we know that life can exist without photosynthesis and Europa might have the right conditions for this.

But there is still a lot we don’t know about Europa. Previous probes to Jupiter have gathered some information, but Clipper will be the first dedicated Europa probe. It will make 49 close flybys over a 4 year primary mission, during which it will survey its magnetic field, gravity, and chemical composition. Perhaps most exciting is that Clipper is equipped with instruments that can sample any material around Europa. The hope is that Clipper will be able to fly through a plume of material shooting up geyser-like from the surface. It would then be able to detect the chemical composition of Europa material, especially looking for organic compounds.

Clipper is not equipped specifically to detect if there is life on Europa. Rather it is equipped to determine how habitable Europa is. If there are conditions suitable to subsurface ocean life, and certainly if we detect organic compounds, that would justify another mission to Europa specifically to look for life. This may be our best chance and finding life off Earth.

Clipper is the largest probe that NASA has sent out into space so far. It is about the size of an SUV, and will be powered by solar panels that span 100 feet. Light intensity at Jupiter is only 3-4% what it is on Earth, so it will need large panels to generate significant power. It also has batteries so that it can operate while in shadow. NASA reports that soon after launch Clipper’s solar arrays successfully fully unfolded, so the probe will have power throughout the rest of its mission. These are the largest solar arrays for any NASA probe. At Jupiter they will generate 700 watts of power. NASA says they are “more sensitive” than typical commercial solar panels, but I could not find more specific technical information, such as their conversion efficiency. But I did learn that the panels have much more sturdy, in order to survive the frigid temperatures and heavy radiation environment around Jupiter.

Clipper will take a somewhat indirect path, first flying to Mars where it will get a gravity boost and swing back to Earth where it will get a second gravity boost. Only then will it head for Jupiter, where it will arrive in 2030 and then use its engines to enter into orbit around Jupiter. The orbit is designed to bring it close to Europa, where it will get as close at 16 miles from the surface over its 49 flybys. At the end of its mission NASA will crash Clipper into Ganymede, another of Jupiter’s large moons, in order to avoid any potential contamination of Europa itself.

I always get excited at the successful launch of another planetary probe, but then you have to wait years before the probe finally arrives at its destination. The solar system is big and it takes a long time to get anywhere. But it is likely to be worth the wait.

An even longer wait will be for what comes after Clipper. NASA is “discussing” a Europa lander. Such a mission will take years to design, engineer, and build, and then more years to arrive and land on Europa. We won’t get data back until the 2040s at the earliest. So let’s get hopping. The potential for finding life off Earth should be one of NASA’s top priorities.

The post The Clipper Europa Mission first appeared on NeuroLogica Blog.

The natural motors that power tail-like appendages in bacteria seem to have a single evolutionary origin, allowing parts from different species to be combined to create a tiny new engine

Colossal, a US firm that is aiming to revive lost species such as the woolly mammoth, says it now has a near-complete genome of the extinct thylacine