Scientists from the British Antarctic Survey drill ice cores in Antarctica and analyze them to discover Earth's temperature and carbon dioxide levels in the past.

In this video, ice core scientist Nerilie Abram reveals how we collect and study ice throughout the ages, and how it gives us insight into Earth's changing climate.

00:00 Introduction
00:20 How does an Antarctic Survey expedition work?
00:52 How to drill ice cores?
01:28 How is the climate changing in Antarctica?
01:43 What can we learn from ice cores?
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