Drones quite possibly represent the most transformative military innovation since jet engines and atomic weaponry. Through satellite imaging and remote technology, countries such as the United States can destroy small targets halfway around the world with pinpoint accuracy. Now civilian industries are acquiring drones for everything from monitoring crops to delivering packages. Kreps explains how they and the systems associated with them work, how...

Most Americans and Europeans have by now heard of Shariah. In the West, politicians, media commentators, televangelists, and others have stoked fears that Muslims intend to impose a repressive rule based on Shariah in America and Europe. Shariah has been portrayed as a medieval system that oppresses women, stifles human rights, and imposes harsh punishments like stoning and amputation. In reality, however, Shariah is a complex concept that has been...