US refusal to collaborate with China on space science is short-sighted and misguided, from both a scientific and a pragmatic standpoint.
Volume 479 Issue 7373, 17 November 2011
The week in science: Geron stops clinical trials with human embryonic stem cells; NSF starts high-risk grants programme; and disgraced psychologist Stapel returns his PhD.
Books & Arts
News & Views
Quantum information has been suggested as a means to prove beyond doubt a person's exact spatial position. But it turns out that all attempts to solve this problem using such an approach are doomed to failure.
The trend of scaling down the silicon transistor, which has driven the revolution in computer technology over several decades, is coming to an end. The semiconductor industry is now considering new transistor concepts to secure the next generation of computers. This Insight reviews six promising approaches — some are near commercialization and others could be ready in the next 10—20 years.