A Laboratory of the Future Human Experience
“Because sounds bounce and travel in different ways, birds have to use songs that can cope with this”.
Birds living in urban areas sing at a higher pitch to reduce the impact of echoes from surrounding buildings, a study claims. Higher-pitched songs travel further in built-up areas because their echoes fade more quickly, meaning the following notes are clearer and easier to pick out.
[youtube]http://www.youtube.com/watch?v=qLziFMF4DHA&feature=player_embedded[/youtube]
In a new research, scientists have shown that human beings can develop echolocation, the system of acoustic signals used by dolphins and bats to explore their surroundings. The research was conducted by a team of researchers from the University of Alcala de Henares (UAH) in Spain.
Continue reading… “Humans Can Develop Echolocation Used By Dolphins And Bats”
