These are today's best ideas
By the Radiological Society of North America
By Deena Shanker at Bloomberg
By the University of Cambridge
By Brittany Shoot at Smithsonian
By Steve Holt at CityLab
The Aspen Institute is an educational and policy studies organization based in Washington, D.C.
TIME Ideas hosts the world's leading voices, providing commentary on events in news, society, and culture. We welcome outside contributions. Opinions expressed do not necessarily reflect the views of TIME editors.