 How do the ecosystems respond to nature's blackouts? To learn more we're joined by Ali Clement, an ocean scientist at the British Antarctic Survey who's currently at the Rothera base. Good day to you Ali. Hello, nice to meet you. I probably shouldn't say good day, there isn't any day. When was the last time you saw day? So we had a sun down ceremony a few weeks ago by lowering the British flag and then in a few weeks time we'll have a sun up ceremony where we put the flag back up