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Your Roku has secret settings and menu screens - here's how to unlock them

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or

16 discounted gadgets I use regularly as a handyman (and why they make such a big difference)

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or

The death of partying in the USA

In January, The Atlantic's Ellen Cushing published an essay with an admirably blunt title: “Americans Need to Party More.” Burrowing into the appendix tables of the American Time Use Survey, she unearthed the fact that just 4.1 percent of Americans said they “attended or hosted” a party or ceremony on a typical weekend or holiday in 2023. In other words, in any given weekend, just one in 25 US households had plans to attend a social event. The ATUS is a government questionnaire that asks a larg

How to prove false statements: Practical attacks on Fiat-Shamir

Randomness is a source of power. From the coin toss that decides which team gets the ball to the random keys that secure online interactions, randomness lets us make choices that are fair and impossible to predict. But in many computing applications, suitable randomness can be hard to generate. So instead, programmers often rely on things called hash functions, which swirl data around and extract some small portion in a way that looks random. For decades, many computer scientists have presumed

The brightest flashlights of 2025: Expert recommended

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or

The best free password managers of 2025: Expert tested

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or

Radiocarbon dating reveals Rapa Nui not as isolated as previously thought

This article has been reviewed according to Science X's editorial process and policies . Editors have highlighted the following attributes while ensuring the content's credibility: Marae with ahu (a central stone platform) on Mo’orea, Windward. Credit: Antiquity Archaeologists have analyzed ritual spaces and monumental structures across Polynesia, questioning the idea that Rapa Nui (Easter Island) developed in isolation following its initial settlement. The first people in Polynesia settled t

Computer Scientists Figure Out How to Prove Lies

Randomness is a source of power. From the coin toss that decides which team gets the ball to the random keys that secure online interactions, randomness lets us make choices that are fair and impossible to predict. But in many computing applications, suitable randomness can be hard to generate. So instead, programmers often rely on things called hash functions, which swirl data around and extract some small portion in a way that looks random. For decades, many computer scientists have presumed

Mighty mitochondria: Cell powerhouses harnessed for healing

James McCully was in the lab extracting tiny structures called mitochondria from cells when researchers on his team rushed in. They’d been operating on a pig heart and couldn’t get it pumping normally again. McCully studies heart damage prevention at Boston Children’s Hospital and Harvard Medical School and was keenly interested in mitochondria. These power-producing organelles are particularly important for organs like the heart that have high energy needs. McCully had been wondering whether t

Google brings its AI-powered marketing tools to India after ‘Google tax’ repeal

Google has launched a suite of its AI-powered advertising tools in India, which debuted in the U.S. in May, as the repeal of the so-called “Google tax” has made the South Asian market more attractive to global tech firms selling online ads. In March, the Indian government scrapped its 6% levy on digital advertisements, effective in April, as a move to address some of the trade concerns raised by the Trump administration. The United States Trade Representative had criticized the levy by calling

Topics: ads ai google india year

This high-tech eye massager is the only thing that helps my migraines, and it's 48% off during Prime Day

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or

Best Prime Day TV deals: My 50 favorite sales, updated live

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or

Prime Day tablet deals 2025: 30+ deals on iPads, Android, and more

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or

Best Prime Day TV deals: My 45+ favorite sales, updated live

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or

An ambitious vision of a city built from lava

Venice, Italy CNN — Erupting from fiery volcanoes, lava has historically been an uncontrollable force that destroys buildings and neighborhoods in its wake. But what if that force could instead be redirected and harnessed to create whole cities? An ambitious project from Icelandic firm s.ap arkitektar, presented at this year’s Venice Architecture Biennale (running until November 23), proposes just that. Whereas lava naturally cools on the landscape to become volcanic rock such as basalt, “Lava

5,000-Year-Old Rock Carving Is Among the Oldest Known Depictions of an Ancient Egyptian Ruler

An ancient rock engraving in the Lower Nile Valley may offer a rare glimpse into the origin of Egyptian kings. The art panel depicts an elite individual with features resembling those of early Egyptian rulers, from the very beginning of political unification across Egypt. Around 6,000 years ago, Egypt underwent a dramatic political transformation, ultimately leading to the formation of the Egyptian state under the first pharaoh, Narmer, around 3100 BCE. Researchers still know relatively little

A Typology of Canadianisms

How to Use DCHP-3 A Typology of Canadianisms Entry Structure Frequency Charts Other Charts List of Labels Copyright Note The basic principles of entry structure remain the same as in DCHP-2 (see here), though the appearance is quite different. A Typology of Canadianisms While this dictionary lists entries (headwords, lexemes), meanings are its smallest unit. Each meaning is assigned to one of six Types of Canadianism or is marked as “Non-Canadian”. The label “Non-Canadian” is used for meanin

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. 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 proces

Best Prime Day security camera deals: My 20+ favorite discounts available now

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or

Best Prime Day Apple deals: My 45+ favorite sales live now

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or

Best Prime Day TV deals: My 31+ favorite sales, updated live

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or

The 40+ best Walmart deals to compete with Prime Day: TVs, headphones, laptops, and more

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or

The Death of Partying in the USA and Why It Matters

In January, The Atlantic's Ellen Cushing published an essay with an admirably blunt title: “Americans Need to Party More.” Burrowing into the appendix tables of the American Time Use Survey, she unearthed the fact that just 4.1 percent of Americans said they “attended or hosted” a party or ceremony on a typical weekend or holiday in 2023. In other words, in any given weekend, just one in 25 US households had plans to attend a social event. The ATUS is a government questionnaire that asks a larg

Nvidia briefly touched $4 trillion market cap for first time

Nvidia CEO Jensen Huang attends a roundtable discussion at the Viva Technology conference dedicated to innovation and startups at Porte de Versailles exhibition center in Paris on June 11, 2025. Nvidia stock rose on Wednesday lifting the company's market cap briefly past $4 trillion for the first time as investors scooped up shares of the tech giant that's building the bulk of the hardware for the generative artificial intelligence boom. However, Nvidia stock ended finishing the day only up 1.

Best Prime Day smartwatch and fitness tracker deals: My 20 favorite sales live now

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or

The 25+ best Prime Day 2025 deals under $25

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or

Need a bigger power station? The Delta 2 Max is a steal at 44% off for Prime Day

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or

Best Prime Day TV deals: My 30 favorite sales, updated live

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or

Best Prime Day PC gaming deals: My 60+ picks for top deals live now

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or

Nvidia Makes History

Nvidia made history on Wednesday, becoming the first company in the world to reach a $4 trillion market capitalization. This unprecedented milestone solidifies its position as a dominant force in the global economy and a key player in the artificial intelligence revolution. While OpenAI and its viral chatbot ChatGPT might be the public face of AI, Wall Street looks to Nvidia as the true barometer of this transformative technology. Nvidia designs and manufactures the advanced graphics processing