With visitor numbers surging, Antarctica's ice-free land needs better protection from human activities, leading environmental scientists say. The new study found that all 55 areas designated for protection lie close to sites of human activity. Antarctica has over 40,000 visitors a year, and more and more research facilities are being built in the continent's tiny ice-free area. Most of the Antarctic wildlife and plants live in the ice-free areas -- and this is also where people most visit.

Source: A call to better protect Antarctica: Human activity threatening continent