It's been almost a month since we welcomed spring in the northern hemisphere. Average temperatures have begun to rise, the thaw is awakening wintering animals, migratory birds are returning, trees are blossoming, and poppies and their scarlet color fill the roadsides. Spring arrives loaded with culture and gifts us with holidays like Sant Jordi and International Dance Day. It encourages walks in the countryside and bookstalls. Today, with our eyes on the quintessential day of books, we suggest five publications: a child being born, a heart beating, a mother traveling, a questioning humanity, and a science journalist who will make us travel without moving from our chairs.