Connect with us

Published

on

A gateway between the worlds of the living and the dead? — Archaeologists may have found ruins of fabled entrance to Zapotec underworld Spanish missionaries deemed Lyobaa to be a “back door to hell” and sealed all entrances.

Jennifer Ouellette – Jul 5, 2023 10:07 pm UTC reader comments 76 with An archaeological research expedition has uncovered evidence of a legendary subterranean labyrinth under the ruins of Mitla in Oaxaca, Mexico, believed by the ancient Zapotecs to be an entrance to the underworld they called Lyobaa.

In 1674, a priest named Francisco de Burgoa published his account of visiting the ruins of the Zapotec city of Mitla in what is now Oaxaca in southern Mexico. He described a vast underground temple with four interconnected chambers, the last of which featured a stone door leading into a deep cavern. The Zapotec believed this to be the entrance to the underworld known as Lyobaa (“place of rest”). Burgoa claimed that Spanish missionaries who explored the ruins sealed all entrances to the temple, and local lore has long held that the entrance lies under the main altar of a Catholic church built over the ruins.

An international team of archaeologists recently announced that they found evidence for this fabled underground labyrinth under the ruinsright where the legends said it should beafter conducting scans of the site using ground penetrating radar (GPR), electrical resistivity tomography (ERT), and seismic noise tomography (SNT). The team also found evidence of an earlier construction stage of a palace located in another part of the site.

Mitla is one of the most significant archaeological sites in Oaxaca Valley. It was an important religious center, serving as a sacred burial sitehence its name, which derives from Mictlan (“place of the dead” or “underworld”). The unique structures at Mitla feature impressively intricate mosaics and geometric designs on all the tombs, panels, friezes, and walls, made with small polished stone pieces fitted together without using mortar. Enlarge / Title page of Father Burgoas Geographica Descripcin (1674).ARX Project

Spanish soldiers and Christian missionaries began arriving in the valley in the 1520s, and several mentioned the ruins of Mitla in their accounts. Naturally, they interpreted the underground temple as a site for an “evil spirit” and its “demoniacal servants.” Burgoa’s writing is the most descriptive, detailing how the Zapotec high priest used the palace of the living and the dead. He marveled at the mosaics and skilled construction of the site. And he specifically mentioned four chambers above the ground and four chambers below the ground. Advertisement

Per Burgoa, the first underground chamber served as a chapel; the second was where the high priests were buried; the third was where the kings were buried, along with their luxurious worldly goods; and the fourth featured a door at the rear which purportedly led to “a dark and gruesome room.” A stone slab covered the entrance. “Through this door they threw the bodies of the victims of the great lords and chieftains who had fallen in battle,” Burgoa wrote. It seems that certain “zealous prelates” decided to explore the underground structures, carrying lighted torches and using ropes as guides to ensure they didn’t get lost. They encountered “putrefaction,” foul odors, and “poisonous reptiles,” among other horrors.

Once back above ground, the explorers walled up what they considered to be a “back door to hell.” An archbishop ordered Mitla destroyed in 1553, and the stone blocks and other rubble were used to build various Spanish Catholic churches, most notably the Church of San Pablo, built right on top of part of the ruins. Several modern explorers subsequently found their way to the ruins at Mitla between 1834 and 1960. Various small underground chambers were discovered during those and later excavations, but nothing that matched Bergoa’s description of a vast labyrinthine network of large connected chambers. Still, the legend persisted. Page: 1 2 Next → reader comments 76 with Jennifer Ouellette Jennifer is a senior reporter at Ars Technica with a particular focus on where science meets culture, covering everything from physics and related interdisciplinary topics to her favorite films and TV series. Jennifer lives in Baltimore with her spouse, physicist Sean M. Carroll, and their two cats, Ariel and Caliban. Advertisement Channel Ars Technica ← Previous story Next story → Related Stories Today on Ars

Continue Reading

Business

Nvidia beats expectations again in defiance of AI bubble fears

Published

on

By

Nvidia beats expectations again in defiance of AI bubble fears

The world’s most valuable company has reported another series of expectation-beating results, heading off fears of the AI bubble bursting for now.

Nvidia’s revenue reached $57bn in the three months to October, higher than Wall Street estimates and the company’s own guidance.

That’s up 62% on the same time last year, and has been described by the business as an “outstanding” quarter.

Money blog: Ryanair flights to EU banned in ‘unprecedented’ decision

A profit measure called earnings per share was also better than expected at $1.30.

It matters as Nvidia has powered the artificial intelligence (AI) boom through its computer chips, which are key parts in AI chatbots such as ChatGPT.

More on Artificial Intelligence

Nvidia has major tech companies as clients and acts as a good proxy for whether the tens of billions of dollars invested in AI is paying off.

Its chief executive, Jensen Huang, has been described as the Godfather of AI and watch parties were organised for those looking to follow the Wednesday evening announcement.

The company has been a massive beneficiary of the push to put money into AI, with its share price reaching stratospheric highs.

In October, it became the first worth $5trn (£3.83trn), about the size of the German economy, Europe’s largest, and double the UK’s benchmark stock index, the FTSE 100.

What’s been announced?

Revenue from data centres reached a record high of $51.2bn, more than £10bn higher than the three months previous.

The outlook is for continuing strong sales in the final three months of the financial year, as the company forecasts revenue will be roughly $65bn.

Read more:
Nvidia boss defends against claims of bubble by ‘Big Short’ investor
Inflation slows to 3.6%, but food costs shoot upwards

Demand for Nvidia products continues to surpass expectations, while the business is “still in the early innings” of AI transitions, its chief financial officer Colette Kress said.

Mr Huang said sales of its blackwell chips are “off the charts” and its cloud graphics processing chips (GPUs) are “sold out”.

Why it matters

Developing AI infrastructure, like the construction of data centres, has been a significant contributor to US economic growth, as measured by gross domestic product (GDP).

A faltering of AI expansion, therefore, impacts the US economy, the world’s largest, which in turn affects the UK and global economies.

Anxiety around the massive valuations tech companies have accrued, on the hope of AI revolutionising the world, is likely to be staved off by the results announcement.

A fall in these tech company valuations could have meant a drop in the value of pension pots or savings.

Just seven dominant tech companies, many of which have borrowed to invest in AI, make up more than a quarter of major US stock index, the S&P 500.

Please use Chrome browser for a more accessible video player

Could the AI bubble burst?

In the last year alone, Nvidia’s share price has risen more than 230%.

Some, including US trader Michael Burry, famous for being played by Christian Bale in the Hollywood film The Big Short, have effectively bet that Nvidia’s share price would fall.

Addressing the topic of an AI bubble, Nvidia’s founder, Mr Huang, said, “From our vantage point, we see something very different”.

What next?

Regardless of the figures released on Wednesday evening, significant market moves were anticipated, given the attention paid to the results and the significance of the company.

Nvidia shares rose as much as 4% in after-hours trading.

The results also boosted the share price of its chip-making competitors like Broadcom and Advanced Micro Devices.

For now, the AI bubble remains intact.

Continue Reading

Technology

‘Robotaxi has reached a tipping point’: Baidu, Nvidia leaders see momentum as competition rises

Published

on

By

‘Robotaxi has reached a tipping point’: Baidu, Nvidia leaders see momentum as competition rises

Chinese tech company Baidu announced Monday it can sell some robotaxi rides without any human staff in the vehicles.

Baidu

BEIJING — Chinese robotaxi companies are expanding abroad at a faster clip than U.S. rivals Waymo and Tesla — at a time when industry leaders say autonomous driving is finally near an inflection point.

“I think robotaxi has reached a tipping point, both here in China and in the U.S.,” Baidu CEO Robin Li said Tuesday on an earnings call, according to a FactSet transcript.

“There are enough people who have [had the] chance to experience driverless rides, and the word of mouth has created positive social media feedback,” he said, noting that the wider public exposure could speed up regulatory approval.

His comments echoed similar notes of optimism in the last few weeks from Nvidia CEO Jensen Huang and Xpeng Co-President Brian Gu — who reversed his previously cautious stance after faster-than-anticipated tech advances. Xpeng is launching robotaxis in the southern Chinese city of Guangzhou next year.

It’s a global market with significant growth potential, likely worth more than $25 billion by 2030, according to Goldman Sachs’ estimates in May.

Baidu to ramp up global exports as robotaxi service grows in China

To seize that opportunity, Chinese companies are aggressively expanding overseas and claim they are close to making robotaxis a viable business, rather than simply burning cash to grab market share.

In the last 18 months, Baidu, Pony.ai and WeRide landed partnerships with Uber that allow users of the ride-hailing app to order a robotaxi in specific locations, starting in the Middle East.

Such tie-ups “will be critical to success” as they enable robotaxi companies to operate more efficiently and reach profitability more quickly, said Counterpoint Senior Analyst Murtuza Ali.

Once we can generate profit for every single car in a second-tier city [like Wuhan] in mainland China, we can generate profits in lots of cities across the world.

Halton Niu

General manager for Apollo Go’s overseas business

Expanding on experience at home

Baidu says that since late last year, its Apollo Go robotaxi unit has reached per-vehicle profitability in Wuhan, where the company has operated over 1,000 vehicles in its largest deployment in China.

That means ridership is enough to offset a Wuhan taxi fare that’s 30% cheaper than in Beijing or Shanghai, and far below prices in the U.S. or Europe. Besides developing autonomous driving systems, Baidu has also produced electrically-powered robotaxi vehicles — without relying on a third-party manufacturer — that are 50% cheaper.

“Once we can generate profit for every single car in a second-tier city [like Wuhan] in mainland China, we can generate profits in lots of cities across the world,” Halton Niu, general manager for Apollo Go’s overseas business, told CNBC.

“Scale matters,” he said. “If you only deploy, for example, 100 to 200 cars in a single city, if you only cover a small area of the city, you can never become profitable.”

How U.S. rivals stack up

Scale remains the dividing line. In the U.S., Alphabet-owned Waymo operates more than 2,500 vehicles and is expanding rapidly from major cities in California to Texas and Florida, with plans to enter London next year, following its first overseas venture in Tokyo.

Tesla sells its electric cars in China, and reportedly showed off its Cybercab in Shanghai this month. But it began testing its robotaxis in Texas only in June, and this week obtained a permit to operate in Arizona.

Amazon’s Zoox is also ramping up its expansion in the U.S., but has not released overseas plans.

The three companies have not disclosed plans to break even on their robotaxis.

Baidu Apollo Go’s Niu did not rule out an expansion into the U.S. But for now, the robotaxi operator plans to enter Europe with trials in parts of Switzerland next month, following their expansion in the Middle East this year.

Abu Dhabi last week gave Apollo Go a permit to charge fares to the public for fully driverless robotaxi rides, which are operated locally under the AutoGo brand, eight months after local trials began in parts of the city.

But Chinese startup WeRide said it received a similar permit on Oct. 31 to charge fares for its fully driverless robotaxi rides in Abu Dhabi, and claimed that removing human staff from the cars would allow it to make a profit on each vehicle.

That puts Pony.ai furthest from profitability among the three major Chinese robotaxi operators. Its CFO Leo Haojun Wang told The Wall Street Journal in mid-September that the company aimed to make a profit on each car by the end of this year or early next year.

Scaling autonomous vehicle technology is key to the future, says Pony.AI CEO

Pony.ai plans to launch a fully autonomous commercial robotaxi business in Dubai in 2026, after receiving a testing permit in late September. The company plans to roll out in Europe in the coming months and has also outlined an expansion into Singapore.

Pony.ai and WeRide are set to release quarterly earnings early next week.

“Currently, companies like Waymo, Baidu, WeRide and Pony.ai are leading in terms of fleet size, which positions them advantageously in the race for profitability,” said Yuqian Ding, head of China Autos Research at HSBC.

Scale and safety

Fleet size is becoming a competitive marker. Pony.ai reportedly said it plans to release 1,000 robotaxis in the Middle East by 2028, while WeRide aims to operate a fleet of 1,000 robotaxis in the region by the end of next year.

Niu said Apollo Go operates around 100 robotaxis in Abu Dhabi and Dubai, and plans to double its vehicle fleet in the next few months.

“Apollo Go has had a head start with significantly more test rides than the other two,” Kai Wang, Asia equity market strategist at Morningstar, said in an email. “The more testing and data you can collect from trips taken, the more likely the AI sensors are able to recognize the objects on the road, which means better safety as well.”

He cautioned that despite some initial progress, the robotaxi race remains uncertain as “no one has truly had mass adoption for their vehicles.”

Weekly analysis and insights from Asia’s largest economy in your inbox
Subscribe now

Coverage remains limited. Even in China, robotaxis are only allowed to operate in selected zones, though Pony.ai recently became the first to win regulatory approval to operate its robotaxis across all of Shenzhen, dubbed China’s Silicon Valley. In Beijing, self-driving taxis are mostly limited to a suburb called Yizhuang.

Anecdotally, CNBC tests have found Pony.ai offered a smoother ride than Apollo Go, which was prone to hard braking.

As for safety — which is critical for regulatory approval — none of the six operators has reported fatalities or major injuries caused by the robotaxis so far. But Apollo Go and Waymo have begun advertising low airbag deployment rates.

Even if that’s not enough to convince regulators worldwide, Beijing is expected to ramp up support at home.

HSBC’s Ding predicts the number of robotaxis on China’s roads could multiply from a few thousand to tens of thousands between the end of this year and 2026, a shift that would give operators more proof that their model works.

Continue Reading

Environment

A cold gold rush? The race for the Arctic’s critical minerals is heating up

Published

on

By

A cold gold rush? The race for the Arctic's critical minerals is heating up

Traditional painted houses overlooking sea ice in the Old Nuuk district near the Sermitsiaq mountain in Nuuk, Greenland, on Thursday, April 3, 2025.

Bloomberg | Bloomberg | Getty Images

A global scramble to exploit the Arctic’s untapped resources appears to be kicking into overdrive.

In a push to break China’s mineral dominance, countries around the world are increasingly turning to the thawing and sparsely populated northern polar region, seeking to seize its raw materials and benefit from new commercial trade routes.

U.S. President Donald Trump, for example, has repeatedly underscored the importance of Greenland, a vast Arctic territory, calling U.S. ownership of the island an “absolute necessity” for economic and national security reasons.

Canada has recently sought to ramp up Arctic investment as part of a push designed to unlock its resource potential, particularly amid strained diplomatic ties with the U.S.

Russia, which has a sprawling Arctic coastline, has long recognized the region as a strategic priority. Indeed, President Vladimir Putin on Tuesday lauded the construction of a new nuclear-powered icebreaker ship to navigate Arctic waters, saying “it’s important to consistently strengthen Russia’s position” in the region.

“The Arctic is seen as a source of a lot of different raw materials, not only oil and gas, but a lot of strategic materials and rare earths,” Marc Lanteigne, associate professor at the Arctic University of Norway in Tromso, told CNBC by telephone.

“Greenland, right now, is a repository of a lot of base metals, precious metals, gem stones, rare earths, uranium … it’s all there. The problem is that up until recently, it was seen as completely unviable to actually mine them,” Lanteigne said.

“But with climate change and the ability to navigate the Arctic Ocean much more frequently, especially during the summer months, Greenland is starting to be looked at much more carefully as a potential alternative source for a lot of these strategic materials to China.”

Why everyone wants a piece of Greenland

Greenland has been transformed by the climate crisis. A major analysis of historic satellite images, published last year by researchers at the U.K.’s University of Leeds, showed parts of the autonomous Danish territory’s ice sheet and glaciers have been replaced by wetlands, areas of shrub and barren rock.

For mining companies, the major ice loss has inadvertently made some of the island’s strategic minerals more accessible.

Tony Sage, CEO of Critical Metals, which is developing one of the world’s largest rare earth assets in southern Greenland, said there has been a notable upswing in investor interest in Greenland in recent months, particularly since Trump returned to office and raised the prospect of seizing control of the territory.

“I remember in his first term, in around 2018 and 2019, he made a big song and dance about the strategic value of rare earths in Greenland, so even back then,” Sage told CNBC by telephone.

Perception vs. reality

Alongside Critical Metals, mining and exploration company Amaroq is also working to exploit some of Greenland’s resources. Amaroq CEO Eldur Olafsson said the firm’s recent discovery of high-grade rare earths in southern Greenland “means a lot to us.”

The project, which will take several years to develop, marked the firm’s first foray into the rare earths space as it expands its interests beyond gold and other strategic minerals.

Just one week after unveiling its rare earths discovery, the company on Nov. 11 confirmed commercial levels of germanium and gallium at its west Greenland hub, a development that Olafsson said could prove to be even more strategically significant.

“The germanium, gallium piece is, in my opinion, much bigger news than people understand,” Olafsson told CNBC by video call.

This aerial view shows icebergs floating in the waters beaten down by the sun with buildings in the background off Nuuk, Greenland, on March 11, 2025, on the day of Greenland, the autonomous Danish territory, legislative elections.

Odd Andersen | Afp | Getty Images

Germanium and gallium are essential components to a wide range of goods, from electric vehicles to semiconductors and military applications.

China, which is the primary global producer of these metals, imposed initial export controls on germanium and gallium in 2023, before singling out the U.S. with an outright ban late last year in response to curbs imposed on its chip sector by Washington. Beijing has since suspended its ban of gallium and germanium exports to the U.S., although the metals remain subject to restrictive measures.

“That is a mineral that the U.S. and the European Union need now. The rare earths are being processed by Lynas and MP Materials. That is something that you can access, I wouldn’t say easier, but you can access it … Germanium and gallium, if you don’t have them then that is a massive problem,” Olafsson said.

“We now have a short-term solution in mining terms to mine zinc, lead, silver and germanium and gallium, while we are then developing exporting the rare earths as well.”

Olafsson said it was important for the company to generate cashflow through its portfolio of gold and other strategic metals while it seeks to deliver on its rare earths potential, noting that the rare earths market is still relatively small.

Asked whether the race for the Arctic’s resources could be compared to a gold rush, Lanteigne said: “This is where perception and reality tend to kick in.”

He added: “There has been a lot of discussion about a rush to develop mineral resources in Greenland, for example, but I can say having been there quite a few times that if you are going to set up a mine then you need to bring in literally everything.”

Even in ideal conditions, Lanteigne said logistical challenges, such as Greenland’s harsh climate and remote landscape, means it could take 15 to 20 years before companies start to turn a serious profit.

Arctic Sweden

Rain falls as a general view taken on August 21, 2025 shows the LKAB iron ore mine and a sign bearing the company’s logo in Kiruna, northern Sweden.

Jonathan Nackstrand | Afp | Getty Images

Niklas Johansson, senior vice president public affairs and external relations at LKAB, said the company is currently in discussion with European lawmakers to ensure that it will be economically viable to develop its resources.

“We’ve already got the material up to the ground. That’s all been paid for by the iron ore. Still, it’s not a given that this is a business case. It looks like it is for us at the moment, but it’s not something that you’d say, ‘oh it’s a no brainer, just run for it,'” Johansson told CNBC by telephone.

“I also tell them that if it looks like this for us, who has most of the infrastructure and everything in place, how do you think it will look for others in Europe?”

Continue Reading

Trending