The passage is "the most dreaded bit of ocean on the globe," Alfred Lansing wrote in his 1959 book "Endurance: Shackleton's Incredible Voyage to the Antarctic." At around 600 miles (965 kilometers ...

As the planet warms, Antarctica's ice sheet is melting and contributing to sea-level rise around the globe. Antarctica holds enough frozen water to raise global sea levels by 190 feet, so ...