Almost weightless and able to pass through the densest materials with ease, neutrinos seem to defy the laws of nature. But these mysterious particles may hold the key to our deepest questions about the universe, says physicist Heinrich Päs. In The Perfect Wave, Päs serves as our fluent, deeply knowledgeable guide to a particle world that tests the boundaries of space, time, and human knowledge.

The existence of the neutrino was first proposed in 1930, but decades passed before one was detected. Päs animates the philosophical and scientific developments that led to and have followed from this seminal discovery, ranging from familiar topics of relativity and quantum mechanics to more speculative theories about dark energy and supersymmetry. Many cutting-edge topics in neutrino research--conjectures about the origin of matter, extra-dimensional spacetime, and the possibility of time travel--remain unproven. But Päs describes the ambitious projects under way that may confirm them, including accelerator experiments at CERN and Fermilab, huge subterranean telescopes designed to detect high-energy neutrino radiation, and the Planck space observatory scheduled to investigate the role of neutrinos in cosmic evolution.

As Päs's history of the neutrino illustrates, what is now established fact often sounded wildly implausible and unnatural when first proposed. The radical side of physics is both an exciting and an essential part of scientific progress, and The Perfect Wave renders it accessible to the interested reader.

Intense heat and drought in the summer of 1988…greenhouse warming…acid rain…the ozone hole…rain forest destruction…Hurricane Hugo… The “endangered Earth” is making headlines around the world, and we are aware as never before of the fragility of the global environment and our own vulnerability to climate change. Yet, despite the technological advances of the last three decades, our knowledge of how the Earth’s systems work and interact remains incomplete at best. To determine environmental policies for the future, we need more information and better global climate models.

In Planet Earth, D. James Baker provides a concise, up-to-date overview of the ongoing international research efforts that will improve our ability to predict global climate change. In straightforward terms, Baker describes remote sensing from space. He reviews extant space-based satellites and their instruments and describes the areas in which operational and research missions are gathering ever-increasing data—on Earth–sun interaction, land vegetation patterns, ocean color, temperature, the atmosphere, the ice sheets of the polar regions, the shape and motion of the Earth’s crust, the Earth’s gravity field—which fill in gaps in our knowledge even as they raise new questions about critical global processes. In view of these questions and the subsequent need for more accurate global models, the satellite networks being planned for the 1990s will require state-of-the-art instrumentation, a new generation of supercomputers, and a high level of international cooperation if they are to succeed. Baker focuses on the United States initiative, Mission to Planet Earth, a long range attempt to study the planet as a whole using polar-orbiting, geostationary, and special orbit satellites coupled with a network of ground stations. In the concluding chapter, the author looks to the next century and examines the difficult long-term problems-of national security, technology transfer, data dissemination, cost, international coordination—that could undermine the achievement of the global operational system he proposes.

Planet Earth is a timely, well-illustrated introduction to Earth-observing satellite technology for the nonspecialist and specialist alike. It distills complex information that is otherwise available only in the technical literature. For those who follow space research, it will prove an indispensable guide.

A Portal in Space, set in Basra, Iraq, during the Iran-Iraq War (1980–1988), follows the lives of Anwar, a newly minted architect, and the other members of his affluent family as they attempt to maintain a sense of normality during the frequent bombing attacks from Iran. When Anwar joins the Iraqi army and then goes missing in action, his family struggles to cope with uncertainty over his fate. His mother falls into depression and secludes herself in the family home, while his father shifts his attention from his duties as a judge to the weekly pilgrimage to Baghdad seeking information on his son—and to Zahra, the young widow he meets there.

Emotionally engaging, A Portal in Space is a wry, wise tale of human beings striving to retain their humanity during a war that is anything but humane. Mahmoud Saeed succeeds brilliantly in bringing the sights and sounds of Iraq to life on the page—whether in a bunker on the front lines of the Iran-Iraq War or in the parlor of a fortune-teller in Baghdad. As Zahra says of the novel she is writing: “It is a normal novel that contains love, war, life, deceit, and death.”