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Sparse Voxels Rasterization: Real-Time High-Fidelity Radiance Field Rendering

Our scene representation is a hybrid of primitive and volumetric model. (a) Primitive component. We explicitly allocate voxels primitives to cover different scene level-of-details under an Octree layout. Note that we do not replicate a traditional Octree data structure with parent-child pointers or linear Octree. We only keep voxels at the Octree leaf nodes without any ancestor nodes. (b) Volumetric component. Inside a voxel is a volumetric (trilinear) density field and a (constant) spherical ha

Users can now sign up for Meta's Community Notes on Facebook, Instagram, and Threads

In brief: Meta has announced that it is now accepting sign-ups for Community Notes, the feature that is replacing third-party fact checkers. Much like the X version that inspired it, Meta's Community Notes allows users on the company's platforms to decide if a post is misleading and add more context. At the start of January, just as Donald Trump's inauguration was approaching, CEO Mark Zuckerberg announced that Meta's third-party fact checkers had become too politically biased and destroyed mor

MLB is testing robotic umpires in Spring Training, eyes 2026 implementation

Forward-looking: Major League Baseball is testing a computerized system for calling balls and strikes during spring training exhibition games. This Automated Ball-Strike System (ABS), which has been in development for four years in the minor leagues, could aid MLB home plate umpires as early as 2026. The ABS uses a network of cameras installed in stadiums to track each pitch and determine whether it crosses home plate within the strike zone. The current iteration uses Hawk-Eye pose-tracking cam

The best VPN services of 2025: Expert tested and reviewed

Virtual private networks (VPNs) encrypt your data and hide your IP address. But there is far more to VPNs than that: they are essential tools to stop others from spying on your online activities, and they can help protect your sensitive information from theft. A VPN is vital when you are traveling or when you have to use public Wi-Fi networks. They forge an encrypted tunnel between your device and the service you are trying to access, which can prevent eavesdropping and stop you from being so e

‘Tripsy’ trip planner app can now convert currencies and show nearby places

Tripsy, a popular app to help users plan and organize their trips, has just received another major update with some useful new features. The new version of the app makes it easier for users to check their expenses in different currencies and also to see nearby places on a map. What’s new with Trispy For those unfamiliar, Tripsy is a trip planner that “helps you plan your entire trip in one place.” You can share your itinerary with family and friends, receive flight alerts, and make wish lists

Medical training’s AI leap: How agentic RAG, open-weight LLMs and real-time case insights are shaping a new generation of doctors at NYU Langone

Join our daily and weekly newsletters for the latest updates and exclusive content on industry-leading AI coverage. Learn More Patient data records can be convoluted and sometimes incomplete, meaning doctors don’t always have all the information they need readily available. Added to this is the fact that medical professionals can’t possibly keep up with the barrage of case studies, research papers, trials and other cutting-edge developments coming out of the industry. New York City-based NYU L

You can now sign up to be a contributor to Meta's Community Notes feature

After announcing its plan to end third-party fact-checking in January 2025, Meta's crowdsourced replacement is finally starting to take shape. You can now join a waitlist to be a Community Notes contributor on Facebook, Instagram and Threads when the feature rolls out in the coming months. Contributors are expect to provide context via a note when a post on one of Meta's platforms "might be inaccurate or confusing," according to the company's sign-up page. Community Notes will be able to be add

Best Bluetooth Speaker for 2025

Sonos Roam: Available in white or black for $179, the Roam is currently the smallest and most affordable Sonos speaker (if you don't count those $99 Sonos-compatible Symfonisk Ikea Wi-Fi bookshelf speakers), although it's fairly expensive for a mini wireless speaker. This Sonos Roam model, like the bigger Sonos Move 2 portable speaker, is equipped with both Bluetooth and Wi-Fi and can tap into an existing Sonos multiroom audio system and link with other Series 2-compatible Sonos speakers. Learn

The 3 Best Essential Oil Diffusers (and One to Avoid)

I first learned about Pura from a friend whose house always smelled like a high-end boutique under every circumstance. Cooking project, water leak … no matter what was going on in her house at the time, I only ever smelled berries. I have two cats and a multi-sports-playing tween—I knew I needed this. Now, about 14 months into my Pura journey, I have some thoughts. While most of my time has been with the now discontinued Pura 3, I have also since used the Pura 4 and new large-room Pura Plus, al

Beta Technologies’ bet on electric flight and Hyundai’s new Tesla charging port comes up short

Welcome back to TechCrunch Mobility — your central hub for news and insights on the future of transportation. Sign up here for free — just click TechCrunch Mobility! Fifteen years ago, I started writing about a little EV startup that was trying to survive even as others failed in the clean tech boom-and-bust cycle. Back then Tesla had captured the interest of some celebrities and EV enthusiasts — but it was a small circle. A lot has changed since then, including the profile of its largest shar

What’s driving electricity demand? It isn’t just AI and data centers.

Take the US, for example. The IEA report points to other research showing that the 10 states hosting the most data center growth saw a 10% increase in electricity demand between 2019 and 2023. Demand in the other 40 states declined by about 3% over the same period. One caveat here is that nobody knows for sure what’s going to happen with data centers in the future, particularly those needed to run AI. Projections are all over the place, and small changes could drastically alter the amount of en

Hacked on Stripe–$41K Gone, No Real Help from Support. What Now?

I’ve always been nervous about using Stripe after reading horror stories here. Unfortunately, I took my chances due to the ease of integration, and now I’m here with my own nightmare. We’ve used Stripe for nearly 10 years as a marketplace, only allowing Standard Accounts—never had a major issue. Until yesterday. A hacker created six Express accounts, linked them to our platform, and drained our balance. Then, they started charging our users and funneling the stolen money to their Express accou

Want an electric bike? The HiBoy EX6 is $805 off!

This is not the type of stuff we usually cover, but I couldn’t ignore this offer when it came across my desk. Electric bikes offer commuters a new form of easy, clean, and fun transportation, but they tend to be a bit pricier than I would hope. How about getting an $805 discount on the HiBoy EX6 Electric Bike? This brings the price down to a much more reasonable $774.99. Get the HiBoy EX6 Electric Bike for just $774.99 ($805 off) This offer is available from Best Buy. The discount is applied au