Stormwater culverts can be dangerous places, due to hazards such as crumbling concrete ceilings, submerged obstacles, and toxic gas accumulations. The PIPE-i robot was designed with that fact in mind, ...

Part of Portsmouth Street in Concord is closed as work continues on a bridge across from the lot of the Society of N.H. Forests. Credit: GEOFF FORESTER / Monitor staff Sign up for the Concord ...