LiveScience: In an area of Hawaii, far removed from most human habitation, a recent cleanup effort yielded an 18-wheeler's worth of human debris during a 19-day anti-pollution campaign this year. The region, which includes Midway Atoll, some 1,200 miles (1,900 kilometers) from the Hawaiian mainland, acts as a "fine-tooth comb" in picking up debris from elsewhere, officials with the National Oceanic and Atmospheric Administration (NOAA) told LiveScience. Broken fishing gear, tattered nets and plastic fragments...