Every six minutes, somewhere in the United States, an underground utility line is damaged by careless excavation. Such incidents not only disrupt electrical, gas, and other services but also create ...

Climate change is altering summits of the tallest ice-capped mountains in the contiguous United States. For the last century, there have been five ice-capped summits in the contiguous United States, ...

America’s dependence on GPS is a matter of national security, economic vitality, and daily life. We all agree: the United ...