Ice core reaches back more than a million years

An international team of scientists successfully drilled a nearly 2-mile-deep ice core, reaching the bedrock beneath the Antarctic ice sheet. These ice samples are expected to unveil, for the first time, critical details about Earth's climate and atmospheric history, showing a continuous record of the history of our climate as far back as 1.2 million years. Host Carolyn Beeler speaks with professor Carlo Barbante at Ca' Foscari University of Venice who coordinated the research project known as "Beyond Epica: Oldest Ice."