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Uber CEO Dara Khosrowshahi on Tuesday announced that the company is updating its platform with new sustainability-minded features, including an “EV preference” that will let customers opt for fully electric vehicles by default, whenever they hail a ride.

The company previously launched an “Uber Green,” service which has historically included a mix of battery electric vehicles, and hybrid electric models. Now, Uber can offer battery electric vehicles as the sole “green” option in more than 40 cities globally, executives said at Uber’s annual Go Get Zero sustainability conference in London on Tuesday.

Speaking at Uber’s GO-GET Zero event in London, Khosrowshahi said that the company’s rollout of new sustainability-focused features arrives ahead of the 2024 U.S. elections, adding this is a time when the topic of EVs has become a “politically-charged issue.”

However, he noted that the overall trend is moving toward all-electric mobility options.

“The reality is that we will only reach or zero emission goals if policymakers and other businesses do their part as well,” Khosrowshahi said at the event.

“We need more affordable EVs, we need stronger EV mandates, we need incentives for people who are driving the most. We want to make sure that chargers are available at every community, not just the wealthiest. So we all need to step up,” he said.

For drivers, Uber said it is rolling out an “EV Mentor” program, which connects drivers for any questions about electric mobility. The company also debuted an AI chatbot powered by OpenAI’s ChatGPT, looking to answer questions for drivers on the ride-hail network about what it takes to buy and use a battery electric vehicle instead of a gas-burning vehicle.

Transportation has been responsible for about 25% of carbon emissions from human activity globally, according to estimates by the non-profit International Council on Clean Transportation. Carbon emissions, and other greenhouse gases from human activity, cause long-term shifts in temperatures and weather, while also contributing to respiratory disease by forming smog and air pollution.

Ride-hailing services like Uber’s can contribute to traffic congestion and therefore, pollution, according to analysis by Suvrat Dhanorkar, Gordon Burtch and others published in the journal of Transportation Science. Uber has been working to reduce its environmental footprint and looks to become a “zero-emissions platform” by 2040.

On the delivery side of its platform, Uber is adding farmers’ market produce to Uber Eats offerings in two major U.S. markets: New York City and Los Angeles.

Uber said it will also be investing nearly $1 million to enable restaurants in Paris that sell meals via Uber Eats to switch to more sustainable packaging, such as seaweed-based packaging from NotPLA, bags made of foliage by Releaf, and straws made of agricultural suAgar residuals from IAmPlasticFree.

According to statistics tracked by the Organization for Economic Co-operation and Development (OECD), residents in Paris generate more than 400 kg (880 lb) of waste each year. France has implemented laws to reduce this waste, requiring fast food restaurants to move away from disposable, plastic packaging and utensils.

In the U.K., specifically, Uber said it’s launched a partnership with British energy supplier Octopus Energy and Chinese EV firm BYD to co-fund 1,000 free home chargers worth almost £1,000 each for drivers in the U.K.

The deal will give Uber drivers the ability to access Octopus’ “Intelligent Go” tariff to help them with EV charging costs. Drivers will also be able to get 8% off at public charging systems across Octopus’ Electroverse network.

“This is the first partnership between uber a power company and an EV manufacturer and it will meaningfully reduce charging costs for drivers,” Rebecca Tinucci, Uber’s head of global sustainability, said at the London event Tuesday. Tinucci was formerly senior director of charging infrastructure at Tesla.

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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.

WATCH: AWS announces latest CPU chip, will deliver record networking speed

AWS announces latest CPU chip, will deliver record networking speed

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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.

Don’t miss these cryptocurrency insights from CNBC Pro:

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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.

WATCH: Perplexity CEO on AI race: The market of providing answers to questions will become a commodity

Perplexity CEO on AI race: The market of providing answers to questions will become a commodity

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