While our eyes are miraculous little devices, they aren’t very sensitive outside of the normal old red, green, and blue ...

Disposable batteries seem so 1990s. Sure, it’s nice to be able to spend a couple of bucks at the drugstore and get a flashlight or TV remote back in the game, but when the device is a daily ...

Here’s how the Rule of 72 works: Divide 72 by your expected annual interest rate (as a percentage, not a decimal). The answer is roughly the number of years it will take for your money to double. For ...

A new Arizona law requires public schools in the state to enforce stricter phone-use policies and limit student access to the internet and social media starting beginning this school year. Gov. Kate ...

NPR's Ailsa Chang speaks to mathematician Eugenia Cheng about the Pascaline -- a 17th-century invention credited as the first mechanical calculator.

Nano Banana, aka Gemini 2.5 Flash Image, is an advanced AI image model that just so happens to excel at image editing. Ever ...

The Rule of 72 is a simple calculation tool for investors to use, but it's not necessarily the most accurate. Here are some more precise options to try.

President Donald Trump’s approval rating declined one point in a Reuters/Ipsos poll released Tuesday—hours after Trump claimed he has the “highest poll numbers [he’s] ever had”—keeping his rating ...