The story of the world's most enduring witnesses: the trees. From the Flower of Kent apple tree still standing in Sir Isaac Newton's yard, to the English oak given to Jesse Owens after facing down Hitler at the 1936 Berlin Olympics, to the California redwood saved from destruction by July Butterfly Hill, to the Callery pear tree still miraculously alive after the World Trade Towers fell, Witness Trees is a moving tribute to the world's most famous trees, many of which still need humanity's protection.