John Valley Archives - Teaching Kids News Readable, teachable news. Thu, 27 Feb 2014 02:20:29 +0000 en-US hourly 1 https://wordpress.org/?v=6.4.3 https://teachingkidsnews.com/wp-content/uploads/2020/01/cropped-TKN_square_blk-32x32.jpg John Valley Archives - Teaching Kids News 32 32 Oldest Thing On Earth Is A 4.4-Billion-Year-Old Gem https://teachingkidsnews.com/2014/02/26/2-oldest-thing-earth-4-4-billion-year-old-gem/ Thu, 27 Feb 2014 02:19:17 +0000 https://teachingkidsnews.com/?p=12512 Scientists have found the oldest known piece of our planet.

A blue zircon crystal, found on a sheep ranch in Australia, is about 4.4 billion years old.

The gem is about twice the width of a human hair.

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