Antarctica

The Antarctic krill, tiny shrimplike crustaceans, are a key part of the ocean’s food chain for whales, penguins and seals. Increasingly, krill have also become part of the human food chain — krill oil, with omega-3 fatty acids, is advertised as a wonder drug that may help combat heart health, high cholesterol and even improve our moods.

In the culmination of a years-long effort, American scientists say they’ve found signs of life in isolated lakes deep beneath Antarctica.

For our Geo Quiz, try to come up with the zip code for the southernmost post office in the world at the Amundsen-Scott South Pole Station.

Zoologist Tony Martin from the University of Dundee, Scotland is leading one of the biggest rat busting operations ever carried out.

Paul Nicklen risks life and limbs to take photographs in some of the most inhospitable places on earth. One of them has just won him the prestigious Veolia Environment Wildlife Photographer of the Year award.