Communication Has Taken Flight Since The Days of Carrier Pigeons Science and technology have transformed the world with a global network that relays information at the speed of light. by Joe Schwarcz https://www.mcgill.ca/oss/article/technology-history/communication-has-taken-flight-days-carrier-pigeons There is an interesting book on this subject (The Homing Pigeon by United States. Army. Signal Corps et al.) at PG: https://www.gutenberg.org/ebooks/55084 #books #history #technology