Reinhard Radermacher has a vision: A person walks into a room hot and sweaty after exercising, and somewhere in the dark, tucked in a corner, a small robot notices and lights up. It moves forward and ...

We may earn a commission from links on this page. DIY air conditioners, while handy alternatives to running an actual air conditioner, often look pretty ugly. With some paint, a fan, and a bucket, ...

Northern California weather is pretty temperate. You can get by with a lack of central air conditioning, which is good news since nary a single place I’ve lived in the Bay Area has had it. But in the ...