Features:
The Arrow of Time—Beginning and End
by Max Delbrück
Caltech's 1978 commencement speaker muses on the direction in which the Institute intended—and ought—to continue its greatest thrust.
The Elusive Right Hemisphere of the Brain
by Eran Zaidel
Recent research on the right hemisphere indicates that it has unexpectedly rich linguistic structure—a fact that may help us understand some forms of language disability.
Progress in Artificial Heart Valves
Chemical engineers William H. Corcoran and Ajit P. Yoganathan are making studies on the nature of flow systems in the hope of improving the design and performance of artificial heart valves.
The Simple Economics of Water
by James P. Quirk
An economist explains the existing water rights to the Colorado River—and how they got that way.