05/12/2011 09:12 am ET Updated Jul 12, 2011

Isaac Newton's Apple Tree Fenced Off To Tourists

How amazing is it that this tree is still around? Sir Isaac Newton's apple tree--you know, the one that led him to discover gravity--has been fenced off to protect it from the damaging effects of tourists.

Visitors to Newton's childhood home of Woolsthorpe Manor, near Grantham, Lincolnshire, are said to be damaging the tree's roots. So, a willow fence now encircles the site where the great thinker formed his theory.

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