The BBC reports that Earth's most ancient rocks, with an age of 4.28 billion years, have been found on the shore of Hudson Bay, Canada.

Writing in Science journal, a team reports finding that a sample of Nuvvuagittuq greenstone is 250 million years older than any rocks known.

It may even hold evidence of activity by ancient life forms. If so, it would be the earliest evidence of life on Earth.


Link: http://news.bbc.co.uk/1/hi/sci/tech/7639024.stm