Duolingo’s tricks to make you addicted to language learning

Duolingo isn’t just a cute green owl, it’s a masterclass in psychology, gamification, and habit-building. In this video, we break down the hidden tactics Duolingo uses to keep you coming back. From streaks and notifications to clever sound design and reward systems, you’ll discover how this app turns language learning into something you can’t stop engaging with. Whether you’re a language nerd or just curious how apps keep you hooked, this explainer will open your eyes.

How AI tools collect your data across devices—and how to be selective about what you share

Like it or not, artificial intelligence has become part of daily life. Many devices—including electric razors and toothbrushes—have become “AI-powered,” using machine learning algorithms to track how a person uses the device, how the device is working in real time, and provide feedback. From asking questions t

Meta is bringing ads to WhatsApp. Privacy experts are sounding the alarm

Eleven years after purchasing WhatsApp, Meta is going full throttle with its plans to monetize the communication platform. And while officials at the social media giant say that users’ privacy will still be protected, some experts are urging caution.

Meta announced on Monday that over the next few months it will bring advertisements to WhatsApp, a radical shift for an app who

Trump Mobile is here. Experts are baffled

You can stay at Trump hotels, play golf at Trump courses, and could, for a short time in 2007, buy Trump steaks. But MAGA-maniacs now have a new tchotchke they can buy to support the 47th U.S. president: a $499 cellphone sold by the Trump Organizatio

Pentagon Pizza Index: The theory that surging pizza orders signal global crises

A different kind of pie chart is being used to predict global crises.

A surge in takeout deliveries to the Pentagon has become a surprisingly accurate predictor of major geopolitical events, dubbed the “Pentagon Pizza Index.”

Tracking activity at local pizza joints in Arlington County, the X account Pentagon Pizza Report noted an uptick in Google Maps activity from four pizza places near the Pentagon on June 12. We, The Pizza, Di

China is catching up to the U.S. in pharmaceuticals, but it’s not too late to turn that around

A decade ago, China had just a few hundred pharmaceutical drugs actively in development. Today, China has thousands of drugs in active development and is continually increasing investment to make even more.

This transformation was not, however, a foregone conclusion: China faced incredibly high barriers to growing its

The debate over state-level AI bans misses the point

Both sides are missing the point entirely as Congress debates the proposed 10-year ban on state AI laws contained in the “Big, Beautiful Bill.”

The current wrangling over who should regulate privacy, deepfakes, and bias in AI confuses the forest for the trees because it solely focuses on who decides what we should not do.

In contrast, state AI leaders from across the country are gathering this week in New Jerse

Block’s CFO explains Gen Z’s surprising approach to money management

One stock recently impacted by a whirlwind of volatility is Block—the fintech powerhouse behind Square, Cash App, Tidal Music, and more. The company’s COO and CFO, Amrita Ahuja, shares how her team is using new AI tools to find opportunity amid disruption and reach customers left behind by traditional financial systems. Ahuja also shares lessons from the video game industry and discusses Gen Z’s surprising approach to money management.  

This is an abridged transcript of an int

Computer simulations reveal the first wheel was invented nearly 6,000 years ago

Imagine you’re a copper miner in southeastern Europe in the year 3900 BCE. Day after day you haul copper ore through the mine’s sweltering tunnels.

You’ve resigned yourself to the grueling monotony of mining life. Then one afternoon, you witness a fellow worker doing something remarkable.

With an odd-looking contraption, he casually t

This free website is like GasBuddy for parking

Parking in a city can be a problem. It’s not just about finding parking—it’s about finding the right parking. Sometimes, there’s a $10 parking spot only a block away from a garage that charges $50!

So how do you know the best place to park—especially if you’re new to an area, as I was a few years ago, or if you’re traveling and aren’t familiar with a city?

For me, the answer is a smart and completely free user-submitted database of parking spots and rates. It’ll


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