«Sortida Nord» (Why animals have extremities on even number?)

“Sortida Nord” is the entertainment magazine of TV Badalona. Every Tuesday and Thursday, the program presents a variety of content, primarily focused on cultural offerings and the latest news of the city. The program also has a section in which different experts from the city respond to questions from the audience. Pere Renom answers the question: “Why animals have extremities on even number?” Scientifically formulated would be: “Why do most animals have bilateral symmetry?” The explanation is that the bilateral symmetry is favorable in animals that move in a preferred direction.