Trophic interactions within and among species vary widely across spatial scales and species’ ontogeny. However, the drivers and implications of this variability are not well understood. Juvenile Chinook salmon Oncorhynchus tshawytscha have a wide distribution, ranging from northern California to the eastern Bering Sea in North America, but it is...
Persistently high youth unemployment is one of the most pressing problems in South Africa. We prospectively analyze an employer wage subsidy targeted at youth, a policy recently enacted by the South African government to address the issue. Recognizing that a credible estimate of the policy's impact requires a model of...
To better understand the role of tensegrity structures in biological systems and their application to robotics, the Dynamic Tensegrity Robotics Lab at NASA Ames Research Center, Moffett Field, CA, USA, has developed and validated two software environments for the analysis, simulation and design of tensegrity robots. These tools, along with...