Osseily Hanna was born in London in 1978. He studied chemistry at King's College London, followed by a master's degree in computer science at the University of Hertfordshire. He is a bilingual English-Spanish speaker and has studied several languages. He gave up a successful career in global financial markets in 2011 to write his first book, Music and Coexistence, which has been published in five languages. Traveling the Climate Crisis is his second book.