A deep-sea camera captured the first-ever shark recorded in Antarctic waters - a 10- to 13-foot sleeper shark swimming 1,608 feet below the surface.
The first shark ever documented in Antarctic waters was captured on camera at 1,600 feet deep in near-freezing temperatures.
The geoid (the surface of equal gravitational potential of a hypothetical ocean at rest) serves as the classical reference ...
Researchers have identified a "tipping point" about 2.7 million years ago when global climate conditions switched from being relatively warm and stable to cold and chaotic, as continental ice sheets ...