I could spend the next month delving into Science magazine’s “125 Questions”, a huge list of scientific questions to which we don’t yet have answers. From “How are memories stored and retrieved?” to Why do humans have so few genes?”, the people behind Science celebrated the 125th anniversary of their journal by coming up with a list of the big unanswered questions, and specifically, the questions to which science might finally be able to provide answers within the next 25 years. In the words of the editors, the list “is not a survey of the big societal challenges that science can help solve, nor is it a forecast of what science might achieve. Think of it instead as a survey of our scientific ignorance, a broad swath of questions that scientists themselves are asking.” Cool.