The best power banks and portable chargers for every device in 2025

On a recent work trip, I had plenty of things to worry about — but being able to recharge my two smartphones, laptop and iPad were not among my concerns. In my carry-on luggage, I had two medium-cap [...]

The 17 best portable Bluetooth speakers for 2025

Portable Bluetooth speakers are one of the most versatile audio products you can own — they let you enjoy your favorite music wherever you go, whether it’s in the backyard for a BBQ, to the beach [...]

The best portable SSDs for 2025

Whether you want to back up the data on your PC, transfer videos from your Mac or offload a few games from your PlayStation 5, a portable SSD is a quick and easy way to expand your storage. These litt [...]

Lean4: How the theorem prover works and why it's the new competitive edge in AI

Large language models (LLMs) have astounded the world with their capabilities, yet they remain plagued by unpredictability and hallucinations – confidently outputting incorrect information. In high- [...]

Why do AI data centers use so many resources?

With the AI boom, construction of new data centers has skyrocketed, and not without consequence — some communities that count these facilities as neighbors are now facing water shortages and straine [...]

The best laptop power banks for 2025

There’s nothing worse than trying to get work done offsite and realizing your laptop is nearly dead. OK, there are plenty of worse things, but running out of battery when you’re not near an outlet [...]

What’s going on with Donut Lab?

In January, a Finnish-Estonian startup proclaimed it had developed a truly solid state battery, a holy grail for the technology industry. Donut Labs’ cell wasn’t just solid state, however. It clai [...]

Sister, can you spare $12,000 to help me decarbonize my home?

I went to CES with Engadget for the first time this year and, among the robots, laptops, TVs and more robots, the most exciting products I saw were ones trying to make our homes more eco-friendly in t [...]

Amazon Prime Day deals on SSDs and external hard drives for the last day: Save on Samsung, Crucial, Sandisk and more

If you've been holding an SSD or external HDD for your PC build in a cart, waiting to take advantage of an Amazon Prime Day discount, today is your last chance to grab your hardware at that cheap [...]