Claudi Alsina (Barcelona, 1952) is Head of Mathematics at the Architecture Department of the University of Barcelona. He has worked widely in mathematical research and also innovation and promotion of education. Author of numerous popular mathematics books, he is a renowned writer and conference speaker. This guide is the result of his many travels and his particular way of looking at the world. At Ariel he has also published Vitaminas matemáticas and El club de la hipotenusa.
Claudi Mans Teixidó was born in Badalona in 1948. He is Professor Emeritus in the Department of Chemical Engineering of the Universidad de Barcelona, was Dean of the Chemistry Faculty and President of the Science Division. He is the author of serious and popular scientific articles and conference and congress communications for a wide range of audiences. He has also written various text and reference books, including: Tortilla quemada (Burnt Tortilla), Los secretos de las etiquetas (The Secrets of Labels) and La vaca esférica (The Spherical Cow).
Claudia Ranucci was born in Rome, but she has been living in Madrid for some years. She studied Design and Illustration at the High Institute for Artistic Industries in Urbino (Italy). In 1998, alongside with Marcello Conta, she founded the design studio Sparafucile Design, refounded in 2004 as a publishing house.
Claudio Bonifacio Italian historian, who is an expert in shipwrecks, estimates that the sea houses 1600 tons of gold and 34.000 tons of silver valued between 50,000 (US$ 67.305 millions) y 80,000 millions of euros..
In his opinion, precious metals to be found in the deep ocean should be rescued for humanitarian, cultural and social purposes. This could be possible with the cooperation of public and private sectors