New ice cores to tell climate tale

By reading the rings of trees, you can get climate information dating back hundreds or even thousands of years.

If you want to see climate changes over hundreds of thousands of years, however, you have to look at ice.

A team of scientists from five countries recently climbed onto the Qinghai-Tibetan Plateau and drilled six metric tons of ice cores - the oldest ice on Earth's so-called Third Pole.