Showing results for "Time's Echo" in Science

The Man Who Mastered Gravity is an intimate profile of Thomas Townsend Brown, a little-known scientist whose unorthodox ideas about electricity and gravity have made him the subject of decades of speculation and intrigue. Brown developed his novel concepts while serving in the U.S. Navy through the 1930s. In the first months of World War II he was abruptly discharged–despite his expertise in radio, radar, and mine sweeping.

This fascinating yet disquieting audiobook finds that we are running out of dirt, and it's no laughing matter. An engaging natural and cultural history of soil that sweeps from ancient civilizations to modern times, Dirt: The Erosion of Civilizations explores the compelling idea that we are, and have long been, using up Earth's soil. Once bare of protective vegetation and exposed to wind and rain, cultivated soils erode bit by bit, slowly enough to be ignored in a single lifetime but fast enough over centuries to limit the lifespan of civilizations.