The two presidents touched on a range of subjects — the collaborative nature of universities, the call to service answered by today’s students, the critical role research universities must play in revitalizing America’s economy, and the benefit of new centers of educational excellence existing outside the United States — but a common theme emerged: that universities can be as transformational for civilizations as they are for individuals.

Because a light-field camera captures information about not only the intensity of light rays but also their angle of arrival, the images it produces can be refocused later.Photos: Kshitij Marwah
Multiview 3-D photography made simple
A new technique enables the conversion of an ordinary camera into a light-field camera capable of recording high-resolution, multiperspective images.