Book excerpt: Just over one hundred years ago Kristian Birkeland looked into the night sky of his native Norway and saw in the beautiful Northern Lights a mystery waiting to be solved. Determined to prove to the world his bold theory about the heavens above, this misunderstood genius began a quest that would take him from Norway's ice mountains to the deserts of Africa, and across a continent ravaged by war. It was a quest that alienated friends and family, ruined his health and sanity, and ended in his mysterious death in a Japanese hotel in 1917. Lucy Jago brilliantly tells the fascinating and tragic story of Kristian Birkeland, the man who saw in the night sky a secret that no one else could see, but who died trying to convince the world of his vision.