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Here’s a kitchen design trend to die for.

Quartz countertops are now the most popular choice among home renovators and designers because of their durability and resistance to stains, scratches and heat.

But that beauty comes at a deadly price: The workers who make quartz countertops are dying of lung disease at a young age, medical researchers say in a new report.

“Every day I hope that the phone rings telling me to come to the hospital to get my new lungs, former countertop maker Leobardo Segura-Meza said in a statement.

Segura-Meza, 27, started working as a stone fabricator in Los Angeles 10 years ago, cutting, grinding and polishing countertops as a teenager.

He routinely wore protective equipment like a mask and used dust-reducing tools.

But he went to the emergency room with shortness of breath in February 2022, and a lung biopsy revealed he had advanced silicosis.

Although Segura-Meza has been approved for a lung transplant, he fears hell run out of time.

Two of his fellow countertop workers died while they were on the waiting list.

Known among coal miners as “black lung,” silicosis is a lung disease caused by inhaling very small particles of silica, according to the Cleveland Clinic.

Symptoms of silicosis include persistent coughing, shortness of breath, fatigue, weight loss and fibrosis (scarring) of the lungs.

Roughly 2.3 million US workers are exposed to silica in the workplace, including 2 million in construction and 300,000 in other industries, according to the American Lung Association.

There are treatments available, but there is no cure for silicosis, and as the disease gets progressively worse, it is often fatal.

Countertops known as “quartz” are actually made of an artificial material that includes crushed silica (quartz) with resins, dyes and glass, according to the authors of the study, published Monday in the journal of JAMA Internal Medicine.

In 2021, these types of synthetic stone surpassed plastic laminate to become the most used countertop material in the US, marking the first time in decades that laminate was not the most popular countertop material, market research shows.

Some market experts forecast that the demand for quartz countertops will grow to $13 billion by 2027 as consumers desire “uniqueness and individuality, which leads them to look for countertops that can be customized to suit their unique preferences and requirements.”

And quartz countertops are frequently chosen on popular home renovation shows as the “go-to” countertop material for fashionable kitchen and bathroom designs.

But quartz countertops contain more than triple the silica content of natural materials like granite or marble, and the health impact of quartz countertops became apparent soon after they hit the market.

The first US case of silicosis linked to engineered stone was identified in Texas in 2015, and since that time, California has emerged as an epicenter of the disease. 

Throughout the US, an estimated 100,000 stone fabricators are at risk for silicosis associated with exposure to silica.

An Australian government screening program found a silicosis rate of 19.5% among 1,053 workers who were screened for the incurable disease.

In the latest study, researchers from the University of California, San Francisco, UCLA and the California Department of Public Health found 52 California quartz countertop workers with silicosis.

Twenty of them had advanced silicosis, and 10 died before the study concluded.

Our paper raises the alarm, said Dr. Sheiphali Gandhi, a UCSF pulmonologist and co-author of the study. If we don’t stop it now, we’re going to have hundreds if not thousands of more cases. Even if we stopped it now, we’re going to be seeing these cases for the next decade because [silicosis] takes years to develop. 

The researchers called for public health officials, doctors and policymakers to implement measures to better protect workers from exposure to silica dust, more quickly diagnose cases of the disease or even ban quartz countertops altogether.

Australia has considered banning the product but has not yet done so, instead developing regulations to help reduce the risk of silicosis through better air monitoring, training and reporting.

In 2019 and 2020, California safety officials investigated the state’s countertop industry and found that about 72% of the 808 fabrication shops operating in the state were “likely out of compliance with the existing silica standard,” putting hundreds of workers at risk of silicosis, according to NPR.

Last month, the County of Los Angeles Board of Supervisors unanimously approved a motion directing the countys director of public health to report within 90 days on the options to ban the sale, fabrication and installation of silica fabricated stone in the County,” according to LAist.

Additionally, the California Division of Occupational Safety and Health has begun drafting emergency rules surrounding the manufacture and use of engineered quartz products.

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Norwegian tax authority sees 30% jump in crypto reporting

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Norwegian tax authority sees 30% jump in crypto reporting

Norwegian tax authority sees 30% jump in crypto reporting

According to Norwegian authorities, more than 73,000 people in the country reported on $4 billion in crypto holdings for the 2024 tax year.

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Technology

Nvidia CEO Jensen Huang starts a key trip to South Korea — here’s what he might be up to

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Nvidia CEO Jensen Huang starts a key trip to South Korea — here's what he might be up to

Nvidia CEO Jensen Huang delivers remarks next to U.S. President Donald Trump at an ‘Investing in America’ event in Washington, D.C., on April 30, 2025.

Leah Millis | Reuters

Nvidia CEO Jensen Huang is headed to South Korea, one of the company’s most important markets, ahead of meeting there between U.S. President Donald Trump and his Chinese counterpart Xi Jinping.

For Huang, it’s expected to be a trip that mixes business and politics with a meeting with Trump on the cards as well as execs from South Korea’s biggest firms such as Samsung and SK Group.

Market watchers will also be looking out for clues as to Nvidia’s future in China.

Here’s what might happen this week with Nvidia.

Nvidia’s key suppliers

South Korea is home to one of Nvidia’s most important suppliers: SK Hynix. The company develops so-called high-bandwith memory, or HBM, a specific type of semiconductor that goes into Nvidia’s high-end AI systems.

Among the execs that Huang is expected to meet is SK Group Chairman Chey Tae-won, Yonhap reported. SK Group is SK Hynix’s parent company.

The meeting could be a chance to discuss future HBM development. Rival Samsung also develops HBM but its product has not been certified by Nvidia for use. A discussion about the progress on Samsung’s HBM could be on the cards as Huang said Tuesday he would meet with the company.

Infrastructure and business deals

Trump meeting and China

And for Huang, it’s not just about business. Geopolitics will be a big focal point as Huang’s trip coincides with a planned meeting between Trump and Xi in South Korea.

Trump called Huang “an incredible guy” during a speech at the APEC Summit in South Korea. Separately, Trump said he will meet with the CEO on Wednesday.

This week could be crucial for providing insights on Nvidia’s future in China. The tech giant was previously banned from exporting its AI chips to China until earlier this year when the Trump administration ended the restrictions. While Nvidia is permitted to export its downgraded H20 chip to China, Beijing has reportedly pushed local companies not to purchase it. Instead, China is pushing its local firms to buy domestic Nvidia alternatives.

Trump on Wednesday signaled that Nvidia’s Blackwell AI processors could be up for discussion with Xi.The Blackwell chip is Nvidia’s most advanced product and is not currently allowed to be exported to China.

“Trump wants to do business with China and he considers almost everything is business including Nvidia,” George Chen, partner and co-chair of the digital practice at The Asia Group, told CNBC on Wednesday.

“We may see China wants some sort of guarantee that the U.S. will not add location trackers into U.S. chips to be sold to China … The U.S. may also have its own demands in return, hence Nvidia now becomes one of the bargains for the two presidents in Korea.”

Chinese regulators in July raised concerns about the security of Nvidia chips in July. The world’s second-largest economy is a lucrative market for Nvidia and being shut out has already cost the tech giant billions of dollars in lost sales. Any opening up of the China market will be positive for the chip maker.

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CNBC Daily Open: Rallies and tech ‘revolution’ — all powered by AI

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CNBC Daily Open: Rallies and tech 'revolution' — all powered by AI

OpenAI CEO Sam Altman (L) shakes hands with Microsoft Chief Technology Officer and Executive VP of Artificial Intelligence Kevin Scott during the Microsoft Build conference at the Seattle Convention Center Summit Building in Seattle, Washington, U.S., on May 21, 2024.

Jason Redmond | Afp | Getty Images

Investors can’t get enough of artificial intelligence, despite worries over the sector’s excessively high valuations.

The S&P 500, Dow Jones Industrial Average and Nasdaq Composite rose Tuesday stateside, with all three notching new intraday highs. The major averages were juiced by gains in tech. Nvidia popped nearly 5%, while Microsoft climbed roughly 2%.

Both Apple and Microsoft reached a market capitalization of over $4 trillion after their shares rose. It was the first time Apple hit that milestone, though it closed just shy of that level.

Tech companies can’t get enough of each other, either.

Nvidia announced a $1 trillion investment in Nokia, which the Finnish company said will go toward developing its AI plans. For those, like me, who remember Nokia as a company that made the most desirable and bullet-proof phones: It primarily produces cellular equipment now.

Meanwhile, with its 27% stake in OpenAI’s for-profit business, Microsoft is potentially sitting on a goldmine — provided AI finds its footing as a sustainable, revenue-generating business in the long run. OpenAI on Tuesday announced it had completed its restructuring as a nonprofit with a controlling stake in its for-profit arm.

It’s not just Microsoft. Investors who have poured money into tech could potentially gain big — as Cathie Wood of Ark Invest says, “If our expectations for AI … are correct, we are at the very beginning of a technology revolution.”

What you need to know today

And finally…

Jerome Powell, chairman of the US Federal Reserve, during the International Monetary Fund (IMF) and World Bank Fall meetings at the IMF headquarters in Washington, DC, US, on Thursday, Oct. 16, 2025.

Kent Nishimura | Bloomberg | Getty Images

The Fed has a rate cut plus a bunch of other things on its plate this week. Here’s what to expect

Markets are assigning a nearly 100% probability that the Federal Open Market Committee will approve a second consecutive quarter percentage point, or 25 basis point, reduction in the federal funds rate. The overnight lending benchmark is currently targeted between 4%-4.25%.

Beyond that, policymakers are likely to debate, among other things, the future path of reductions, the challenges posed by a lack of economic data and the timetable for ending the reduction in the Fed’s asset portfolio of Treasurys and mortgage-backed securities.

— Jeff Cox

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