 But as the researchers were celebrating, what was going on in nature at this darkest time of year? 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.