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Earth`s crust at least 4.4 bn years old: Study

Last Updated: Monday, February 24, 2014, 10:01

A microscopic grain of Earth`s oldest known mineral has been dated to 4.4 billion years ago, shedding light on our planet`s infancy and how it came to harbour life, researchers said today.

Supervolcanoes take just hundreds of years to grow

Last Updated: Thursday, May 31, 2012, 14:20

The largest volcanoes on Earth may take as little as a few hundred years to form and erupt, a new study has revealed.