Famous tree doctor Ribeiro also acts as tree advocate to save hometown trees; Bainbridge Island, WA; 4/22/09

Globe-Trotting Tree Doctor Has Saved Best Work for Bainbridge Kitsap Sun - WA, United States
A plant pathologist for more than 30 years, the Kenyan-born Ribeiro uses Bainbridge as his home base between globe-spanning, tree-saving adventures that have been profiled in The Wall Street Journal and on NBC's "Today" show.
Hes treated the Doomsday Tree, under which the Magna Carta was signed, and provides ongoing care for Britain's Tortworth Chestnut, which is said to have sprouted more than 1,200 years ago.
"How long a tree lives depends on how you treat it," he said.