Robots are useful for “dirty, dangerous and dull” jobs, any roboticist will tell you. And that’s shown once again by the Q-Bot: a robot designed for the tiniest spaces of your home–the crawl spaces ...

Q: In this coldest of winters, I need help! My family room floor is like a block of ice and my several attempts to fix the problem have failed. I've read many of your columns about insulation problems ...

Q:Our Mill Valley house was built in 1957 and was not insulated. Every time a wall is opened up, we add insulation. Some say it would be a good idea to insulate the floor of our house. There is a ...