Last year, I added my DNA profile to a private genealogical database, FamilyTreeDNA, and clicked “Yes” to allow the police to search my genes. In 2018, police in California announced they’d caught the Golden State Killer, a man who had eluded capture for decades. They did it by...

Google has just released a technical report detailing how much energy its Gemini apps use for each query. In total, the median prompt—one that falls in the middle of the range of energy demand—consumes 0.24 watt-hours of electricity, the equivalent of running a standard microwave for...

I remember using a princess toothbrush when I was little. The handle was purple, teal, and sparkly. Like most of the other pieces of plastic that have ever been made, it’s probably still out there somewhere, languishing in a landfill. (I just hope it’s not in the ocean.) I’ve been...