From AFP News Agency.
Ice cores extracted by scientists from glaciers or polar ice caps contain air bubbles that have been trapped for millennia. Analysing them provides information about the composition of Earth’s atmosphere thousands of years ago. Here’s a videographic explaining how core samples are extracted and analysed by scientists. VIDEOGRAPHIC
Interested in licensing this video ? Get in touch 👉 http://u.afp.com/wvnD
N.B.: AFP’s services and content are for professional use only
