Report: Michael Marek, presented by Sonya DiehnMarch 31, 2016
Antarctica is the last landmass on Earth to be left almost completely untouched by humankind. The seventh continent is home to penguins, whales, seals and albatrosses. And an increasing number of cruise ships are taking people to see them. But could these vessels and the human visitors they carry pose a threat to the remote habitat of our southern creatures?