Add Yahoo as a preferred source to see more of our stories on Google. From a machine that digs up tree trunks to a tunnel-washing truck that looks like a car wash on wheels, these machines are all ...

WASHINGTON (AP) — Art Liscano knows he’s an endangered species in the job market: He’s a meter reader in Fresno, Calif. For 26 years, he’s driven from house to house, checking how much electricity ...

The problem with infrastructure is that it tends to be expensive. And slow to build. And hard to maintain. Oh, and also kind of boring. Most people only notice it when it collapses, like an old bridge ...