SANDBANKS, UNITED KINGDOM - AUGUST 01: Chief Scout Peter Duncan blows a horn to mark centenary celebrations on August 1, 2007 in Brownsea Island, England.  Scouts from almost every country in the world have gathered to celebrate Scouting's 100th birthday in 2007. The organisation, started by Robert Baden- Powell with his first Scout camp on Brownsea Island in Poole Harbour in 1907, is now the largest co-educational youth movement in the UK, with over 400,000 young members and 100,000 adult volunteers.   (Photo by Peter Macdiarmid/Getty Images)