While fairies or their equivalent appear in the folklore of many cultures, nowhere have they been as embraced and celebrated as in Celtic lands. From Ireland and Scotland to Wales and even the Celtic-influenced areas of Western France, the stories of these mystical creatures—fair, willowy and...

In Discarded Science, John Grant took a fascinating look at all the things science got wrong through the centuries. But at least those were honest mistakes. Grant’s equally absorbing follow-up examines something more sinister: deliberate hoaxes and frauds. He takes us through a rogue...