Cover Movement trajectories, each recorded during a 1-hour time period, for rats with brain lesions that reduce dopamine signaling. These animals serve as a model of Parkinson's disease and display severe difficulty in initiating movements, as illustrated by the white trajectories (on black background) showing limited locomotion. Black trajectories (on white background) illustrate the recovery of locomotive activity induced by electrical stimulation of the dorsal columns of the spinal cord.
Rewiring Faulty Circuits in the Brain A wide range of neuropsychiatric disorders seems to respond to deep brain stimulation--but how does it work, and where will it lead?
A Lifetime of Work Gone to Waste? One scientist who helped lead the effort to characterize the Yucca Mountain nuclear waste repository talks about the latest setback.
Exxon Valdez Turns 20 Twenty years ago this week, the worst oil spill in U.S. history struck Alaskan waters. Researchers are still asking: Has the ecosystem recovered?