'ARE you curious to know', Eduardo Galeano seems to ask in his new book, Children of the Days, A Calendar of Human History. He is, of course, passionate to answer. Galeano quotes Albert Einstein, who was constantly watched by the US secret service agents for his closeness to the communists and whose brain is preserved for research for an explanation of his genius: “I have no special gift. I am only passionately curious”. Galeano is also passionately curious about human history, struggles and evolution.