The exact geographic center of the United States is near Lebanon, Kansas.
Manmade islands allow the roadway to enter the tunnels beneath the Bay's shipping channels.
Given their sheer volume, ninety-nine percent of the living space on the planet is found in the oceans. Ninety percent of all volcanic activity occurs in the oceans. In 1993, scientists located the largest known concentration of active volcanoes on the sea floor in the South Pacific. This area, the size of New York state, hosts 1,133 volcanic cones and sea mounts. Two or three could erupt at any moment.