What do ice cores tells us about climate change?

What can ice cores tell us about the atmosphere millions of years
ago?


These cylinders of ice, drilled from glaciers and ice sheets
around the world, preserve precious clues about our changing
climate and records such as rainfall, temperature and greenhouse
gases, even volcanic eruptions. But what can the past tell us
about the future?


Host Graihagh Jackson hears from two ice core experts about their
icy adventures in Antarctica, the Himalayas and beyond.


Dr Liz Thomas is Head of Ice Cores Research at the British
Antarctic Survey and is currently working on an ice core that may
be the oldest ever.


Lonnie Thompson is a pioneer in the field whose first ice core
finds date back to the 1970s. He is Distinguished University
Professor of Earth Sciences. Senior Research Scientist, Byrd
Polar Research Center, The Ohio State University. Professor
Thompson also appears in a documentary called The Canary.


Presenter: Graihagh Jackson Producers: Diane Richardson and Nik
Sindle Production coordinator: Maria Ogundele and Sabine Schereck
Sound mix: Tom Brignell and Louis Griffin Editor: Simon Watts