Earlier this month, Nintendo let Ars Technica and other outlets have access to a small hands-on slice of Mario Kart World ahead of its planned June 5 launch. Today, a short livestreamed video presentation gave a bit of extra information about how exactly the full version of the free-roaming Nintendo Switch 2 launch game will work in practice.

As the name implies, Mario Kart World sets itself apart from previous games via a "vast interconnected world" that you can roam freely between the actual race courses. That open space between races will feature "hundreds of P-switches," Nintendo said, each of which activates a small mission to "hone your driving abilities." Free-roaming racers will also be able to find hidden medallions and question-mark panels, as well as "drive-thru" food items that can be used to unlock new outfits.

While cruising around the Mario Kart "world," players will stumble onto new courses "inspired by their surrounding region," as well as "nostalgic courses for past titles... reimagined and spread throughout the world." When playing in Grand Prix mode, the drive between these courses will be integrated into the usual four-course cups themselves; after racing Mario Kart Circuit in the Mushroom cup, for instance, the second race "will have you covering the distance from Mario Bros. Circuit to Crown City," Nintendo said.

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Tesla is facing a new scandal that once again sees the electric automaker accused of misleading customers. In the past, it has been caught making " misleading statements " about the safety of its electric vehicles, and more recently, an investigation by Reuters found Tesla EVs exaggerated their efficiency . Now, a lawsuit filed in California alleges that the cars are also falsely exaggerating odometer readings to make warranties expire prematurely.

The lead plaintiff in the case, Nyree Hinton, bought a used Model Y with less than 37,000 miles (59,546 km) on the odometer. Within six months, it had pushed past the 50,000-mile (80,467 km) mark, at which point the car's bumper-to-bumper warranty expired. (Like virtually all EVs, Tesla powertrains have a separate warranty that lasts much longer.)

For this six-month period, Hinton says his Model Y odometer gained 13,228 miles (21,288 km). By comparison, averages of his three previous vehicles showed that with the same commute, he was only driving 6,086 miles (9,794 km) per 6 months.

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It’s one of the oldest conversations in gaming. Do you play video games because you’re looking for a challenge and want to experience the thrill and satisfaction of overcoming obstacles? Or do you turn to games to feel empowered, for the escapist fantasy of possessing incredible abilities that are often unattainable in real life?

Nowhere is this question more relevant than in the role-playing game genre. The core of the genre is developing a character (or stable of characters) over time, watching their power grow and capabilities expand. Satisfying player power fantasies is at the heart of many RPGs, where you can watch your virtual avatar grow from an unknown serf clad in rags to a living god, wielding incredible power to dominate your enemies or redeem a broken world.

That said, the thrill of power is only really exciting when leavened with a little friction. Eventually, even being omnipotent gets old.

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Rice, the world’s most consumed grain, will become increasingly toxic as the atmosphere heats and as carbon dioxide emissions rise, potentially putting billions of people at risk of cancers and other diseases, according to new research published Wednesday in The Lancet.

Eaten every day by billions of people and grown across the globe, rice is arguably the planet’s most important staple crop, with half the world’s population relying on it for the majority of its food needs, especially in developing countries.

But the way rice is grown—mostly submerged in paddies—and its highly porous texture mean it can absorb unusually high levels of arsenic, a potent carcinogenic toxin that is especially dangerous for babies.

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On Wednesday, OpenAI announced the release of two new models—o3 and o4-mini—that combine simulated reasoning capabilities with access to functions like web browsing and coding. These models mark the first time OpenAI's reasoning-focused models can use every ChatGPT tool simultaneously, including visual analysis and image generation.

OpenAI announced o3 in December, and until now, only less capable derivative models named "o3-mini" and "03-mini-high" have been available. However, the new models replace their predecessors—o1 and o3-mini.

OpenAI is rolling out access today for ChatGPT Plus, Pro, and Team users, with Enterprise and Edu customers gaining access next week. Free users can try o4-mini by selecting the "Think" option before submitting queries. OpenAI CEO Sam Altman tweeted that "we expect to release o3-pro to the pro tier in a few weeks."

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Should the city of Houston, which proudly bills itself as "Space City," have a prized Space Shuttle orbiter on public display?

More than a decade ago, arguably, the answer was yes. After all, the Space Shuttle program was managed from Johnson Space Center, in southeastern Houston. All the astronauts who flew on the shuttle trained there. And the vehicle was operated out of Mission Control at the Houston-based facility.

But when the final decisions were being made to distribute the shuttles 15 years ago, the Houston community dragged its feet on putting together a competitive proposal. There were also questions about the ability of Space Center Houston to raise funding to house the shuttle within a new display area, which magnified concerns that the historical vehicle, like a Saturn V rocket before it, would be left outside in the region's humid environment. Finally, other cities offered better proposals for displaying the shuttles to the public.

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The Trump administration plans to kill the free tax filing program operated by the Internal Revenue Service, the Associated Press reported today , citing two anonymous sources.

The IRS launched Direct File in a pilot for the 2024 tax filing season. It was available to taxpayers in 12 states last year, and was available in 25 states this year. The program's website says the filing tool will be open until October 15 for people who obtained deadline extensions, but it hasn't been updated to account for the plan to end Direct File.

"The program had been in limbo since the start of the Trump administration as Elon Musk and the Department of Government Efficiency have slashed their way through the federal government," the AP article said. "Musk posted in February on his social media site, X, that he had 'deleted' 18F, a government agency that worked on technology projects such as Direct File."

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After X (formerly Twitter) announced it would be killing its "Support" account, disgruntled users quickly roasted the social media platform for providing "essentially non-existent" support.

"We'll soon be closing this account to streamline how users can contact us for help," X's Support account posted, explaining that now, paid "subscribers can get support via @Premium, and everyone can get help through our Help Center."

On X, the Support account was one of the few paths that users had to publicly seek support for help requests the platform seemed to be ignoring. For suspended users, it was viewed as a lifeline. Replies to the account were commonly flooded with users trying to get X to fix reported issues, and several seemingly paying users cracked jokes in response to the news that the account would soon be removed.

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LG TVs will soon leverage an AI model built for showing advertisements that more closely align with viewers' personal beliefs and emotions. The company plans to incorporate a partner company’s AI tech into its TV software in order to interpret psychological factors impacting a viewer, such as personal interests, personality traits, and lifestyle choices. The aim is to show LG webOS users ads that will emotionally impact them.

The upcoming advertising approach comes via a multi-year licensing deal with Zenapse, a company describing itself as a software-as-a-service marketing platform that can drive advertiser sales “with AI-powered emotional intelligence.” LG will use Zenapse’s technology to divide webOS users into hyper-specific market segments that are supposed to be more informative to advertisers. LG Ad Solutions, LG’s advertising business, announced the partnership on Tuesday.

The technology will be used to inform ads shown on LG smart TVs’ homescreens, free ad-supported TV (FAST) channels, and elsewhere throughout webOS, per StreamTV Insider . LG will also use Zenapse's tech to “expand new software development and go-to-market products," it said. LG didn’t specify the duration of its licensing deal with Zenapse.

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