Science

snip...

As she chats to me via a voice messaging app, the internet signal pinging from a satellite, a helicopter thunders overhead.

This one isn't ferrying people, but is emptying waste from the camp toilets.

The scientists must protect Antarctica's special ecosystem from non-native microbes, pathogens, and contaminants.

"You can't just pee on the rocks," Dr Selway says.

"It's all got to be dealt with properly for environmental reasons. Quite a big part of life here is dealing with human waste."