Science Explorist

A solar storm powerful enough to disrupt satellites, GPS, communications and electrical grids isn’t science fiction — and scientists are actively preparing for one.

In 1859, the Carrington Event, one of the most intense geomagnetic storms ever recorded, struck Earth. Telegraph systems malfunctioned, some equipment reportedly sparked, and auroras were seen unusually far from the polar regions.

Today, the stakes would be far higher because modern civilization depends heavily on satellites, navigation systems, telecommunications and electrical infrastructure.

To test how prepared we are, the European Space Agency (ESA) ran an extreme simulation inspired by the Carrington Event. The scenario involved a hypothetical X45-class solar flare, followed by high-energy particles and an exceptionally powerful coronal mass ejection.

According to ESA, radiation from such an eruption could disrupt radio communications, radar and GPS-related services within minutes. Energetic particles arriving shortly afterward could threaten spacecraft electronics, while the later geomagnetic storm could dramatically heat Earth’s upper atmosphere.

That heating matters because it increases atmospheric drag on satellites in low-Earth orbit. In ESA’s simulation, satellite drag could rise by around 400%, increasing collision risks, consuming more spacecraft fuel and shortening satellite lifetimes. ESA researchers cautioned that during an event of this magnitude, essentially no spacecraft would be completely safe.

Scientists are therefore working on better early-warning systems.

ESA is developing its Distributed Space Weather Sensor System (D3S), a network of satellites and instruments designed to monitor conditions around Earth and improve space-weather forecasting.

An even more ambitious project is ESA’s Vigil mission, currently planned for launch in 2031. Positioned near the Sun–Earth L5 Lagrange point, Vigil will observe the Sun from the side and could provide advance information about hazardous solar activity before some regions even rotate into view from Earth. In certain situations, ESA says this could provide up to four or five days of additional notice.

That extra warning could give satellite operators, power-grid managers and communications providers valuable time to take protective measures before a major storm reaches Earth.

The Carrington Event happened more than 160 years ago. The question is no longer whether powerful solar storms are possible — but how well our technology-dependent civilization will cope when another extreme one eventually arrives.

Source: European Space Agency (ESA); Andrew Paul, Popular Science, “Scientists prepare for the next Carrington Event,” October 24, 2025.

One of the pioneers of modern AI is warning that the technology could fundamentally disrupt the economic system if machines replace workers faster than society can adapt.

Geoffrey Hinton, the Nobel Prize-winning computer scientist widely known as the “Godfather of AI,” raised the warning during a public discussion with U.S. Senator Bernie Sanders at Georgetown University.

Hinton argued that artificial intelligence may be different from previous technological revolutions. Historically, new technologies eliminated some jobs but eventually created entirely new industries and occupations. With sufficiently advanced AI, however, Hinton believes many displaced workers may have nowhere comparable to go because AI itself could perform an increasingly broad range of human tasks.

He also pointed to a basic economic problem that could emerge if automation produces widespread unemployment: companies still depend on consumers having money to purchase what they produce.

“If the workers don’t get paid, there’s nobody to buy their products,” Hinton said, warning that extremely high unemployment could create enormous social disruption.

Hinton said he does not expect AI to create nearly as many new jobs as it replaces. While entirely new occupations may appear—as they have during previous technological transitions—he believes the scale and capabilities of AI could make this transition fundamentally different.

His concerns extend beyond employment. Hinton has repeatedly warned that rapid AI development could widen economic inequality and concentrate even more wealth and power among those who own the technology. He has argued that governments will need to consider stronger safeguards and economic policies capable of distributing the benefits of AI more broadly.

Importantly, this remains Hinton’s prediction about where AI could lead—not an established economic outcome. Other economists and technology leaders argue that AI could instead raise productivity, create new industries and generate new kinds of employment, much as earlier technologies did.

The real question may therefore be not simply whether AI replaces jobs, but whether societies can redesign their economic systems quickly enough if human labor becomes dramatically less necessary.

Source: Business Insider — Tim Paradis/Thibault Spirlet coverage of Geoffrey Hinton and Bernie Sanders’ Georgetown University discussion, “From mass unemployment to wars, the ‘godfather of AI’ warns we’re not ready for what’s coming,” November 19, 2025.

RIP Hōlei Sea Arch. 😔

One of Hawaiʻi Volcanoes National Park’s most iconic coastal landmarks has collapsed into the Pacific Ocean.

The 90-foot Hōlei Sea Arch was still standing on September 23, 2026, but park officials confirmed it had collapsed by September 27. The exact moment is unknown, although the National Park Service said it may have happened while the park was temporarily closed during Tropical Storm Nolo.

The arch was formed in lava flows roughly 550 years old and shaped over centuries by relentless wave erosion. But the structure had become increasingly unstable.

Earthquakes linked to the 2018 Kīlauea eruption damaged nearby coastal cliffs, and powerful surf from Tropical Storm Darby in 2022 broke away part of the lower arch.

After the collapse, officials warned visitors to stay away from unstable cliff edges and closed areas. The coastline remains dangerous, with sudden rockfalls, rough surf and steep drops posing serious risks.

The loss of Hōlei Sea Arch is a powerful reminder that even massive natural landmarks are temporary on geological timescales. The same forces of wind, waves and erosion that create these formations eventually destroy them.

Source: National Park Service — “Hōlei Sea Arch Collapses in Hawaiʻi Volcanoes National Park,” October 1, 2026.

The Pentagon has tapped Elon Musk and other prominent figures to help rethink what American warfare could look like decades from now.

U.S. Defense Secretary Pete Hegseth announced Project Meridian, a 120-day initiative examining how emerging technologies could transform future battlefields. Elon Musk, Anduril founder Palmer Luckey and former House Speaker Newt Gingrich were selected to help lead the effort.

The project will examine technologies including artificial intelligence, autonomous systems, robotics, directed-energy weapons and biotechnology, with the broader goal of identifying capabilities the U.S. military may need for future conflicts.

According to Pentagon statements, the initiative is intended to look beyond conventional military thinking and anticipate entirely new forms of warfare and operating environments. Its work is expected to conclude with a public report as well as classified recommendations.

But the appointments are also drawing scrutiny.

Musk's SpaceX and Luckey's Anduril already conduct substantial business with the U.S. government and defense establishment. Critics cited by The Guardian argue that giving executives of major defense contractors influential advisory roles could create potential conflicts between government policy, military procurement and private commercial interests.

Supporters of bringing private-sector technology leaders into defense planning, meanwhile, argue that companies working at the forefront of AI, spacecraft, autonomous vehicles and military robotics can provide expertise that traditional government institutions may lack.

Project Meridian comes alongside a broader Pentagon push toward autonomous warfare, including plans for a dedicated Autonomous Warfare Command focused on unmanned and autonomous military systems.

The initiative therefore raises a much larger question about how future military technology should be developed — and who should have influence over those decisions.

Should executives whose companies already receive major defense contracts play a leading role in advising the government on the technologies and weapons it may need in the future?

Sources:
U.S. Department of Defense — State of the Force / Project Meridian announcement
The Guardian — Nick Robins-Early, Sept. 30, 2026
The Guardian — Aram Roston, Oct. 1, 2026

Ancient DNA has revealed something remarkable: people in what is now Georgia were consuming cacao nearly 900 years ago — centuries before European colonization.

Researchers analyzing pottery fragments from the Etowah archaeological site identified highly fragmented DNA from Theobroma cacao, the tropical plant used to make chocolate. The pottery came from 11th- and 12th-century contexts associated with communal feasting and the construction of Etowah’s first platform mound.

Earlier chemical studies had detected compounds such as caffeine and theobromine in pottery from the site, but those substances are also found in yaupon holly, a plant native to the southeastern United States. That made it difficult to determine whether cacao had really reached Etowah.

The new archaeogenomic analysis changed that.

Researchers examined three pottery samples and detected ancient cacao DNA in two of them, providing the first direct evidence that cacao consumption formed part of the Mississippian world east of the Mississippi River.

The discovery is particularly striking because cacao grows naturally in tropical regions far south of Georgia. Its presence at Etowah therefore indicates that cacao — or cacao products — traveled enormous distances through networks linking Indigenous communities across the pre-Columbian Americas.

However, scientists have not yet established the exact route. The researchers say cacao could have reached Etowah through Central America, northern Mexico, the American Southwest, or interconnected exchange networks involving several regions. Direct archaeological evidence connecting Etowah specifically to Mexico has not yet been found.

Its archaeological context may be equally important. The cacao residues came from pottery found among the remains of large communal feasts associated with early mound construction. Researchers suggest cacao may therefore have played a role in ceremonial gatherings and rituals that strengthened social bonds within the emerging Etowah community.

The finding adds to growing evidence that long-distance movement of rare plants, materials and ideas across the Americas was far more extensive before European arrival than was once assumed.

Source: King, A., Powis, T. G., Argout, X., Vignes, H., Utge, J., Rhoné, B., Fouet, O., Gaikwad, N. W., & Lanaud, C. (2026). Cacao in the Mississippian World: Archaeogenomic evidence for T. cacao consumption at the Etowah Site, Georgia. PLOS ONE, 21(8), e0353607. Published August 26, 2026.

Children conceived through IVF may carry subtle differences in parts of their DNA, according to a new 2026 study.

Researchers studying a type of mobile DNA known as LINE-1 (L1) — often nicknamed “jumping genes” because they can copy and insert themselves into new locations in the genome — found slightly higher overall L1 content in children conceived through in vitro fertilization (IVF).

The research team analyzed blood or umbilical-cord samples from 33 IVF-conceived children and 42 naturally conceived children using whole-genome sequencing. They also identified 11 genomic locations with different L1 insertion frequencies and 14 with different deletion frequencies between the two groups.

Interestingly, the researchers also examined three families in which the same parents had both an IVF-conceived child and a naturally conceived child. In all three sibling pairs, the IVF-conceived sibling showed higher L1 levels.

Some of the differing L1 sites were located near genes associated with metabolic, cardiovascular, neuropsychiatric and cancer-related conditions. However, this does not mean that IVF causes these diseases. The researchers describe the findings as preliminary evidence of an association and say much larger studies will be needed to determine whether these genomic differences have any meaningful effect on health.

The study raises an intriguing biological question: could conditions experienced by an embryo during its earliest days in the laboratory influence the behavior of mobile genetic elements that remain detectable later in life?

Source: Li J. et al. (2026), American Journal of Obstetrics and Gynecology, DOI: 10.1016/j.ajog.2026.05.005.

Scientists may have uncovered a chemical clue explaining how gadolinium from MRI contrast agents can sometimes remain in the body.

A study published in Magnetic Resonance Imaging investigated what happens when gadolinium-based contrast agents encounter oxalic acid, a naturally occurring compound found in the human body.

Gadolinium is used in certain MRI contrast agents because it dramatically improves the visibility of tissues, blood vessels and abnormalities. Normally, the metal is tightly bound inside a chemical complex designed to keep it stable while the contrast agent is eliminated from the body.

But researchers found that oxalic acid could destabilize two commonly studied contrast agents—Omniscan and Dotarem—under laboratory conditions.

As the contrast agents broke down, gadolinium reacted with oxalate and formed an insoluble compound known as gadolinium oxalate.

That finding is intriguing because previous research has detected gadolinium-rich nanoparticles inside tissues after exposure to MRI contrast agents. Scientists still do not fully understand how these particles form or whether they are responsible for reported health effects.

Importantly, this study does NOT prove that ordinary dietary oxalate from foods such as spinach, nuts or chocolate causes gadolinium deposits after an MRI. The researchers themselves emphasize that their laboratory conditions may not perfectly reflect what happens inside the human body.

Gadolinium retention is already known to occur after some contrast-enhanced MRI scans, sometimes persisting in tissues including the brain, bones and kidneys. However, major medical authorities say that harmful health effects from retained gadolinium have not been established in people with normal kidney function.

One serious complication, nephrogenic systemic fibrosis, has historically been associated primarily with certain gadolinium contrast agents in patients with severe kidney disease.

The new research therefore provides a possible chemical mechanism worth investigating—not evidence that contrast-enhanced MRI is generally unsafe.

Further studies will be needed to determine whether the same oxalate-driven reaction occurs significantly inside patients and whether it contributes to any clinical symptoms.

Source:
Henderson IM et al. “Precipitation of gadolinium from magnetic resonance imaging contrast agents may be the Brass tacks of toxicity.” Magnetic Resonance Imaging, 2025;119:110383. DOI: 10.1016/j.mri.2025.110383.

Additional context: U.S. FDA; American College of Radiology.

Japan has taken a major step toward using stem-cell technology to treat severe heart failure.

Doctors at Osaka Keisatsu Hospital have performed the first transplantation of RiHEART, an iPS-cell-derived heart muscle sheet, since the therapy entered Japan’s public health insurance system. The procedure was carried out on September 29, 2026, on a woman in her 50s with severe heart failure caused by ischemic cardiomyopathy.

RiHEART is made from induced pluripotent stem cells, or iPS cells. These are mature human cells that have been reprogrammed into a stem-cell-like state and then developed into cardiomyocytes — the muscle cells responsible for the heart’s contractions.

The resulting cardiomyocytes are formed into thin sheets that surgeons place directly onto the surface of the damaged heart. Rather than simply replacing the damaged heart muscle, the cells are designed to release signaling molecules that may encourage blood-vessel formation and improve the surrounding heart tissue and its function.

RiHEART received conditional and time-limited approval in Japan in March 2026 for patients with severe heart failure caused by ischemic cardiomyopathy who have not responded sufficiently to standard treatments. It became eligible for public health insurance coverage on September 1.

The early evidence is promising, but still limited. The clinical study behind the approval involved only eight patients and had no control group. Japanese health authorities reported that two of the eight patients met the predefined improvement threshold for the study’s primary heart-function endpoint, while improvements or maintenance were observed across several secondary measures.

That distinction matters: RiHEART is not yet proven to regenerate failing hearts or replace heart transplantation. Its current Japanese authorization is conditional, and researchers must continue collecting safety and effectiveness data before full approval can be considered.

The team plans to treat around 75 patients by 2033, potentially providing much stronger evidence about whether iPS-derived heart muscle sheets can become a reliable regenerative therapy for advanced heart failure.

If larger studies confirm meaningful long-term benefits, could lab-grown heart tissue eventually become a routine alternative for some patients who currently have very limited treatment options?

Sources:
Kyodo News, September 30, 2026
Pharmaceuticals and Medical Devices Agency (PMDA), Japan
Japan Ministry of Health, Labour and Welfare
Cuorips Inc., RiHEART clinical and regulatory information

Data centers need water to cool. People need water to survive. When supplies are limited, that difference matters.

Behind every AI request, cloud backup, video stream, and online service sits physical infrastructure—massive data centers packed with servers that generate enormous amounts of heat.

Keeping those servers cool can require substantial quantities of both electricity and water.

Many facilities use ev***rative cooling, where water absorbs heat and is then released into the atmosphere as v***r. Other cooling systems repeatedly circulate water but must periodically discharge a portion called “blowdown” because salts, minerals, and treatment chemicals become increasingly concentrated.

The concern becomes especially serious when large data centers are built in drought-prone regions or communities already facing pressure on groundwater and municipal water systems.

Supporters point to jobs, investment, and tax revenue. Critics argue that communities deserve to know exactly how much water a proposed facility will consume—and whether residents could eventually face higher utility costs, stressed aquifers, or tighter water restrictions.

Importantly, data centers do not all have to rely heavily on drinking-quality water. Alternatives include closed-loop cooling, reclaimed wastewater, and air-based cooling systems, although each comes with its own energy, cost, and climate trade-offs.

As AI infrastructure expands, the real question is not whether society should have data centers. It is where they should be built, how efficiently they should operate, and whether local water supplies are being protected first.

Source: MOST Policy Initiative. (2026). Data Center Water Use. MOST Policy Initiative Science Note.

Indigenous Peoples make up less than 6% of humanity — yet their lands are among the most important strongholds for nature left on Earth.

Every year on August 9, the world observes the International Day of the World’s Indigenous Peoples, commemorating the first meeting of the UN Working Group on Indigenous Populations in Geneva in 1982.

Today, the occasion also highlights something increasingly important for the planet: Indigenous communities are major custodians of forests, wildlife and intact ecosystems.

Indigenous territories cover roughly 28% of the world’s land surface and include about 11% of the planet’s remaining forests. Many of these areas overlap with regions of exceptionally high biodiversity, showing how traditional land stewardship can play a critical role in conservation.

For generations, Indigenous communities have developed ways of farming, hunting, fishing and managing natural resources that are deeply adapted to local ecosystems. In many communities, traditional food systems continue to supply a substantial share of their food and livelihoods while maintaining strong connections between culture and the environment.

As climate change, deforestation and biodiversity loss accelerate, protecting Indigenous land rights is increasingly recognized not only as a matter of human rights, but also as an important part of global conservation.

Source: United Nations — International Day of the World’s Indigenous Peoples, UN Department of Economic and Social Affairs.