What Your Smartwatch Health Data Can and Can't Tell You
Smartwatches track more health signals than ever. Some are reliable for trends, others are rough estimates. Here is how to read the numbers sensibly.
Hardware
Why Humanoid Robots Are So Hard to Build
Humanoid robots promise to work in spaces built for people. Making them balance, grip and run all day safely is one of the toughest problems in engineering.
How Much RAM Do You Really Need in a Laptop?
RAM decides how many apps and browser tabs your laptop can juggle smoothly. For most people 16GB is the sweet spot, but creators and developers should aim higher.
CPU vs GPU vs NPU: What Each Chip Actually Does
Laptops now advertise three kinds of processors. The CPU runs everything, the GPU does huge amounts of parallel math, and the NPU runs AI features without draining the battery.