In the spring of 1919, two British solar eclipse expeditions confirmed the correctness of general relativity theory and propelled Albert Einstein to instant celebrity. Before this major turning point, the majority of Einstein's writings published in this volume dealt with the clarification of general relativistic problems, such as the status of the metric field, the character of gravitational waves, the problem of energy-momentum conservation, and questions of cosmology, such as the nature and size of the universe and the distribution of matter within it. After his rise to international fame, Einstein's publications changed markedly. He faced an increasing demand for popular articles and lectures on relativity, its development and meaning. He also felt compelled to respond to a host of commentators, ranging from skeptical physicists to philosophers trying to reconcile his revolutionary theory with their views. For the first time, he also responded in print to outspoken anti-relativists, some of them fueled by cultural conservatism and, frequently, anti-Semitism. Einstein used his newly won fame to lend prestige to political causes, especially to the reconciliation among European nations and to Zionism. In the early years of Weimar Germany, Einstein spoke out vigorously for the young republic, emphasizing the rights of the individual. He agonized over the misery of the Central Europeans in the grip of starvation and economic collapse, praised the support of individuals and groups such as the Quakers, and championed the cause of Eastern European Jews. His rejection of assimilation, combined with a fierce defense of the right of Jews to higher education, led Einstein to campaign for the establishment of a university in Palestine, the land which he conceived of as a cultural center for all Jews.

"Evelyn Fox Keller trained as a theoretical physicist at a time when women didn't "do physics." Unable to find a supportive advisor, she moved into the new field of molecular biology just getting off the ground. After receiving her doctorate, she returned to physics but then took another swerve, joining a small interdisciplinary effort to develop mathematical models of biological systems. This work led to her appointment to a special position as Professor of Mathematics and Humanities at Northeastern University. When second-wave feminism arrived in the 1960s, it changed the lives of everyone in its path. It certainly changed Keller's, leading her beyond the borders of science altogether. Eventually she began to think of herself as a dual citizen of the proverbial two cultures―science and humanities. The trajectory was hardly straightforward, nor was it conducive to building a conventional career, or even getting a job. Now in hindsight, after an illustrious career and having published fourteen books, Keller reflects on her life, influences, successes and struggles along her trailblazing path as a scientist and feminist." -- From publisher's website

By any measure, Hans Mark was a warrior of the Cold War. Born in Mannheim, Germany, in 1929, he spent his early childhood in Vienna before escaping the Nazi Anschluss in 1938 and eventually emigrating to the United States, settling in New York. He graduated from high school in 1947, went west to attend the University of California, Berkeley, and later earned a PhD in physics from MIT. His work in nuclear engineering soon set him on a path that would be shaped by aeronautics, space exploration, and national defense. It was through advanced technology that Mark believed the United States could win the Cold War. In An Anxious Peace , Mark recounts in detail his life as a twentieth-century “rocket man.” Here is the inside story of one who—in a career spanning more than six decades—was on the technological front line, from long-range bombers to the space shuttle. Along the way, Mark reveals many never-before-told stories from life at NASA and more. Readers will revel in learning the background behind the decision to place a plaque on Pioneer 10 , a space probe that the NASA Ames Research Center designed to fly past the asteroid belt, Jupiter, and Saturn to collect data and images. Mark tells how he, Carl Sagan, and NASA insider John Naugle kept secret the addition of the now iconic 6x9-inch aluminum “message from humanity” until the probe had been launched. To this day Mark is pushing for a manned mission to Mars. One thing is sure: Hans Mark has left a major impact on academic and scientific communities that will be felt for decades to come.