These days, science is everywhere. It pervades our whole society. Sometimes it is just a clutter of commonplace frivolities, like new fashion fabrics. Sometimes it miraculously preserves our life, like penicillin. Sometimes, like climate change, it looms over us as a portent of doom: sometimes it promises a way of escape from such a fate. Sometimes, like a nuclear warhead, it enshrouds us in political terror: sometimes, like a verification technology, it offers an antidote to such evils. How should we respond to this ambiguous and ubiquitous thing called science?