 A million-year-old ice sample drilled from 3 kilometers under the Antarctic and unveiled in Tokyo on Tuesday could yield vital clues on climate change, Japanese scientists said.

A million-year-old ice sample drilled from 3 kilometers under the Antarctic and unveiled in Tokyo on Tuesday could yield vital clues on climate change, Japanese scientists said.

Researchers, showing off the cylindrical samples of what they said was the oldest ice ever to be retrieved, said studying air trapped inside "core" samples taken from various depths under ground could also help predict how the Earth's weather patterns will change in the future.

Scientists dig up million-year-old ice cube

&nbsp;A million-year-old ice sample drilled from 3 kilometers under the Antarctic and unveiled in Tokyo on Tuesday could yield vital clues on climate change, Japanese scientists said.

A million-year-old ice sample drilled from 3 kilometers under the Antarctic and unveiled in Tokyo on Tuesday could yield vital clues on climate change, Japanese scientists said.