When the Viking lander on the planet Minerva was destroyed, sending back one last photo of a strange alien being, scientists on Earth were flabbergasted. And so a joint investigation was launched by the United States and the Soviet Union, the first long-distance manned space mission, and a symbol of the new peace between the two great rivals. Humankind's first close encounter with extraterrestrials would be history in the making, and the two teams were schooled in diplomacy as well as in science. But nothing prepared them for alien war—especially when the Americans and the Soviets found themselves on opposite sides. . . . Praise for A World of Difference “A master storyteller.” — Houston Chronicle “[Harry] Turtledove has proved he can divert his readers to astonishing places. he's developed a cult following over the years. . . . I know I'd follow his imagination almost anywhere.” — San Jose Mercury News “Turtledove never tires of exploring the paths not taken, bringing to his storytelling a prodigious knowledge of his subject and a profound understanding of human sensibilities and motivations.” — Library Journal