The polar bear is known for having alarmingly high concentrations of PCB and other pollutants. But researchers have discovered that Greenland sharks store even more of these contaminants in their bodies.
Underwater mining is a growing industry. Norway might be mining gold from 2000 metres below sea level in just a few years.
Battlefield tourists are on the hunt for the beautiful in the ugly. Meaning in the meaningless. And sometime timeless in the past.