Drawing on more than seven years of research, he reports fromlocations in eighteen different countries, including theNovolazarevskaya science station in Antarctica (the coldest placeon Earth); the Arizona desert (the sunniest); the Pope’sobservatory-cum-fortress outside Rome (possible the leastaccessible); and the crest of Mount Fuji, where—entirely alone—hewelcomes the sunrise on the longest day of the year.