A reliable indicator of the air quality in offices, classrooms, or living rooms is the CO2 content. In fresh air, the concentration of carbon dioxide is around 400 ppm. This stands for “parts per ...

In the world of social media, “keeping receipts” refers to the practice of storing evidence that may come in handy for a callout post at a later date. For [Teddy Warner], though, it’s more applicable ...

Subscriptions, subscriptions, subscriptions. It was bad enough when your video streaming app, music app, and VPN required one. Now you've got subscriptions for shaving razors, dog toys, and beef jerky ...

Robotics is a fascinating field that has come a long way in recent years. What was once cutting-edge and prohibitively expensive for consumer-grade projects has rapidly become accessible to the hobby ...

Pi Network dropped by over 90% in 2025 after its mainnet launch in February 2025. Roughly 15.7 million KYC-verified users have migrated to the mainnet, depositing 437 million PI tokens on CEXs. The ...

Though it began just this year, the Pi Network already has more than 500,000 users, and it aims to be accessible to everyone with a smartphone. Nicolas Kokkalis Ph.D. ’13, Chengdiao Fan Ph.D. ’14, ...