A Comparison of Anxiety Levels Among College Students

The purpose of this causal-comparative study was to compare the differences in anxiety levels among college students by their classification, gender, major, and semester hours taken. Participants were a convenience sample of 113 undergraduate and graduate college students, and were from 22 universities primarily located in the southeastern region of the United States. The participants completed a survey in which they selected their classification, gender, major, number of semester hours taken, race, ethnicity, and native language. The survey also included 20 Likert-scaled questions from the Zung Self-rating Anxiety Scale (Zung, 1971) that measured levels of anxiety based on symptoms experienced by the individual. An analysis of the results revealed that there is no significant difference in anxiety levels among college students of different classifications or by the number of semester hours taken. However, the results also revealed that there is a significant difference in anxiety levels among male and female college students and students with different majors

The Pluto system: Initial results from its exploration by New Horizons

The Pluto system was recently explored by NASA's New Horizons spacecraft, making closest approach on 14 July 2015. Pluto's surface displays diverse landforms, terrain ages, albedos, colors, and composition gradients. Evidence is found for a water-ice crust, geologically young surface units, surface ice convection, wind streaks, volatile transport, and glacial flow. Pluto's atmosphere is highly extended, with trace hydrocarbons, a global haze layer, and a surface pressure near 10 microbars. Pluto's diverse surface geology and long-term activity raise fundamental questions about how small planets remain active many billions of years after formation. Pluto's large moon Charon displays tectonics and evidence for a heterogeneous crustal composition; its north pole displays puzzling dark terrain. Small satellites Hydra and Nix have higher albedos than expected