Elisa Ancori (Barcelona, 1990) is a visual artist and illustrator with a degree in Fine Arts from the University of Barcelona, with studies in Illustration and Textile Art at various schools. She combines art and illustration through the creation of picture books and artistic projects. Her work has been exhibited in Spain, Germany, France, and Morocco. Aron Ra (Arizona, EEUU, 1962) is an American author, podcaster, blogger, and atheist activist critic with creationism and its teaching at American schools. His usual topics are skepticism, free thought, and atheism. Aron has a Bachelor's of Science in Anthropology from the Institute of Human Origins at Arizona State University.