Independent of the normal solar cycle, a decrease in the sunspot magnetic field strength has been observed using the Zeeman-split 1564.8nm Fe I spectral line at the NSO Kitt Peak McMath-Pierce telescope. Corresponding changes in sunspot brightness and the strength of molecular absorption lines were also seen. This trend was seen to continue in observations of the first sunspots of the new solar...

A psychology professor modifies an upper-level psychology course to enhance students' analysis, integration and application of empirical research in a term project.

The evolution of the orbiting debris population larger than 1 mm has been simulated for 100 yr assuming four diierent space policy scenarios. The study was made possible by the development of two speciic software codes, including the relevant source and sink mechanisms and several model options. A sensitivity analysis has shown that the results are relatively insensitive to the adoption of diie...

Transposable elements are often considered parasitic DNA sequences, able to invade the genome of their host thanks to their self-replicating ability. This colonization process has been extensively studied, both theoretically and experimentally, but their long-term coevolution with the genomes is still poorly understood. In this work, we aim to challenge previous population genetics models by co...