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Mark Zuckerberg, chief executive officer of Meta Platforms Inc., during an interview on “The Circuit with Emily Chang” at Meta headquarters in Menlo Park, California, US, on Thursday, July 18, 2024. 

Jason Henry | Bloomberg | Getty Images

A bipartisan group of federal lawmakers sent Meta CEO Mark Zuckerberg a letter on Thursday expressing concern that the company is failing to prevent illicit drug advertisements from running on its platform.

The House members cited recent reports from The Wall Street Journal and the nonprofit Tech Transparency Project, which uncovered a flood of ads on Facebook and Instagram that pointed users to third-party services where they could purchase prescription pills, cocaine and other recreational drugs.

“On March 16, 2024, the Wall Street Journal reported that U.S. federal prosecutors have been investigating Meta for facilitating the sale of illicit drugs,” the lawmakers wrote. “Instead of quickly addressing the issue and fully removing the illicit content, on July 31, 2024, the Wall Street Journal again reported that Meta was ‘”running ads on Facebook and Instagram that steer users to online marketplaces for illegal drugs.'”

Most troubling, they wrote, is that Meta continues to run ads despite the company facing an investigation by U.S. federal prosecutors “for facilitating the sale of illicit drugs.”

The letter’s 19 authors include Reps. Tim Walberg (R-Mich.), Gus Bilirakis (R-Fla.), Kathy Castor (D-Fla.) and Lori Trahan (D-Mass.). They noted the ads were “approved and monetized by Meta” and that they were not hidden on the dark web or private social media pages. Media outlets and researchers could easily find the ads, which contained “contained blatant references to illegal drugs,” while Meta’s internal processes apparently missed them, according to the letter.

“Time and time again we have heard from Meta that users come to your platforms because they like the personalization and experiences you provide, and you use sensitive personal information to direct such personalization through content and advertisements,” the lawmakers wrote. “We in Congress, on multiple occasions, have worked to establish data privacy and security protections for Americans but have, in each instance, been met with friction and opposition from Meta with claims that we would drastically disrupt this personalization you are providing.”

They sent Zuckerberg a list of 15 questions intended to uncover more details about how the Facebook parent is addressing the problem, and asked him to respond by Sept. 6.

Meta confirmed receipt of the letter and said it plans to respond. The company shared with CNBC the statement below that it gave to the Journal when it published the initial story:

“Drug dealers are criminals who work across platforms and communities, which is why we work with law enforcement to help combat this activity. Our systems are designed to proactively detect and enforce against violating content, and we reject hundreds of thousands of ads for violating our drug policies. We continue to invest resources and further improve our enforcement on this kind of content. Our hearts go out to those suffering from the tragic consequences of this epidemic — it requires all of us to work together to stop it.”

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Amazon Web Services is building equipment to cool Nvidia GPUs as AI boom accelerates

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Amazon Web Services is building equipment to cool Nvidia GPUs as AI boom accelerates

The letters AI, which stands for “artificial intelligence,” stand at the Amazon Web Services booth at the Hannover Messe industrial trade fair in Hannover, Germany, on March 31, 2025.

Julian Stratenschulte | Picture Alliance | Getty Images

Amazon said Wednesday that its cloud division has developed hardware to cool down next-generation Nvidia graphics processing units that are used for artificial intelligence workloads.

Nvidia’s GPUs, which have powered the generative AI boom, require massive amounts of energy. That means companies using the processors need additional equipment to cool them down.

Amazon considered erecting data centers that could accommodate widespread liquid cooling to make the most of these power-hungry Nvidia GPUs. But that process would have taken too long, and commercially available equipment wouldn’t have worked, Dave Brown, vice president of compute and machine learning services at Amazon Web Services, said in a video posted to YouTube.

“They would take up too much data center floor space or increase water usage substantially,” Brown said. “And while some of these solutions could work for lower volumes at other providers, they simply wouldn’t be enough liquid-cooling capacity to support our scale.”

Rather, Amazon engineers conceived of the In-Row Heat Exchanger, or IRHX, that can be plugged into existing and new data centers. More traditional air cooling was sufficient for previous generations of Nvidia chips.

Customers can now access the AWS service as computing instances that go by the name P6e, Brown wrote in a blog post. The new systems accompany Nvidia’s design for dense computing power. Nvidia’s GB200 NVL72 packs a single rack with 72 Nvidia Blackwell GPUs that are wired together to train and run large AI models.

Computing clusters based on Nvidia’s GB200 NVL72 have previously been available through Microsoft or CoreWeave. AWS is the world’s largest supplier of cloud infrastructure.

Amazon has rolled out its own infrastructure hardware in the past. The company has custom chips for general-purpose computing and for AI, and designed its own storage servers and networking routers. In running homegrown hardware, Amazon depends less on third-party suppliers, which can benefit the company’s bottom line. In the first quarter, AWS delivered the widest operating margin since at least 2014, and the unit is responsible for most of Amazon’s net income.

Microsoft, the second largest cloud provider, has followed Amazon’s lead and made strides in chip development. In 2023, the company designed its own systems called Sidekicks to cool the Maia AI chips it developed.

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Bitcoin rises to fresh record above $112,000, helped by Nvidia-led tech rally

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Bitcoin rises to fresh record above 2,000, helped by Nvidia-led tech rally

The logo of the cryptocurrency Bitcoin can be seen on a coin in front of a Bitcoin chart.

Silas Stein | Picture Alliance | Getty Images

Bitcoin hit a fresh record on Wednesday afternoon as an Nvidia-led rally in equities helped push the price of the cryptocurrency higher into the stock market close.

The price of bitcoin was last up 1.9%, trading at $110,947.49, according to Coin Metrics. Just before 4:00 p.m. ET, it hit a high of $112,052.24, surpassing its May 22 record of $111,999.

The flagship cryptocurrency has been trading in a tight range for several weeks despite billions of dollars flowing into bitcoin exchange traded funds. Bitcoin purchases by public companies outpaced ETF inflows in the second quarter. Still, bitcoin is up just 2% in the past month.

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Bitcoin climbs above $112,000

On Wednesday, tech stocks rallied as Nvidia became the first company to briefly touch $4 trillion in market capitalization. In the same session, investors appeared to shrug off the latest tariff developments from President Donald Trump. The tech-heavy Nasdaq Composite notched a record close.

While institutions broadly have embraced bitcoin’s “digital gold” narrative, it is still a risk asset that rises and falls alongside stocks depending on what’s driving investor sentiment. When the market is in risk-on mode and investors buy growth-oriented assets like tech stocks, bitcoin and crypto tend to rally with them.

Investors have been expecting bitcoin to reach new records in the second half of the year as corporate treasuries accelerate their bitcoin buying sprees and Congress gets closer to passing crypto legislation.

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Perplexity launches AI-powered web browser for select group of subscribers

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Perplexity launches AI-powered web browser for select group of subscribers

Dado Ruvic | Reuters

Perplexity AI on Wednesday launched a new artificial intelligence-powered web browser called Comet in the startup’s latest effort to compete in the consumer internet market against companies like Google and Microsoft.

Comet will allow users to connect with enterprise applications like Slack and ask complex questions via voice and text, according to a brief demo video Perplexity released on Wednesday.

The browser is available to Perplexity Max subscribers, and the company said invite-only access will roll out to a waitlist over the summer. Perplexity Max costs users $200 per month.

“We built Comet to let the internet do what it has been begging to do: to amplify our intelligence,” Perplexity wrote in a blog post on Wednesday.

Perplexity is best known for its AI-powered search engine that gives users simple answers to questions and links out to the original source material on the web. After the company was accused of plagiarizing content from media outlets, it launched a revenue-sharing model with publishers last year.

In May, Perplexity was in late-stage talks to raise $500 million at a $14 billion valuation, a source familiar confirmed to CNBC. The startup was also approached by Meta earlier this year about a potential acquisition, but the companies did not finalize a deal.

“We will continue to launch new features and functionality for Comet, improve experiences based on your feedback, and focus relentlessly–as we always have–on building accurate and trustworthy AI that fuels human curiosity,” Perplexity said Wednesday.

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