The mystery of Antarctica's massive reappearing ice holes has been solved thanks to researchers with help from seals with antennas stuck to their heads.
원문출처 : https://www.cnn.com/videos/world/2019/06/11/anarctica-massive-hole-mystery-solved-seals.cnn
원문출처 : https://www.cnn.com/videos/world/2019/06/11/anarctica-massive-hole-mystery-solved-seals.cnn