Simultaneously fantastical and frightening, autonomous drones represent the awe-inspiring possibilities of technology. The future seems have arrived in the small beating wings of these sentient additions to our skies, capable of transmitting unprecedented flows of information from all corners of our natural and human-built environment. But before we let autonomous aerial vehicles fly in our cities, we must answer critical questions about the role we want them to play. How can we use drones for good? In this week’s Forefront, we take you to the labs where top researchers are figuring out the technology can help us create more sustainable, connected cities.