Add Yahoo as a preferred source to see more of our stories on Google. A manhole cover launched into space with a nuclear test is the fastest human-made object. A scientist on Operation Plumbbob told ...

ST. JOHNS COUNTY, Fla. — Manhole inspections and smoke testing of the sanitary sewer system started in St. Johns County on Monday. Smoke testing is performed periodically to identify sources of ...

As the story goes, there’s a famous job interview question first used by Microsoft: “Why are manhole covers round?” Our latest episode of The Untapped New York Podcast covers many of the famous and ...

When I first saw this story on an old Quora thread, I didn't believe it. It wasn't like that. This manhole cover was shot into space with a nuclear bomb. Robert Brownlee, an astrophysicist who ...

Smoke testing is performed periodically to identify sources of stormwater inflow and/or groundwater infiltration entering the city’s sewage collection system, according to a news release. Here is the ...

Robert Brownlee was on the Operation Plumbbob team that launched an object in space before Sputnik. They put a manhole cover above a nuke underground, and the explosion shot the iron cap into space.