The visual effects of repeated exposure to carbon dioxide (C02) at levels commonly regarded as innocuous were investigated. Exposure to C02 varied cyclically from .03 (air) to 3.0%, at one atmosphere pressure, every 24 hours for a period of six days. A battery of visual tests was administered during this period and in control periods both before and after the exposure to carbon dioxide. Among t...

Neuroscience has well established that human vision divides into the central and peripheral fields of view. Central vision extends from the point of gaze (where we are looking) out to about 5° of visual angle (the width of one's fist at arm's length), while peripheral vision is the vast remainder of the visual field. These visual fields project to the parvo and magno ganglion cells, which proce...

Climate Change has emerged as one of the grand global challenges facing humanity. The dominant anthropogenic greenhouse gas that seems to be contributing to the climate change problem, carbon dioxide (CO2), has a complex cycle through the atmosphere, oceans and biosphere. The combustion of fossil fuels (power production, transportation, etc.) remains the largest source of anthropogenic CO2 to t...

In this article I explore the reported experiences of children growing up in same-gendered families, with a specific focus on their experiences in their respective school settings. In this article the focus is on whether or not the children disclose their family structure, therefore focusing on disclosure and silence. I propose certain factors that might increase the possibility of open disclos...

Over 150 extrasolar planets are known to orbit sun-like stars. A growing number of them (9 to date) are transiting “hot Jupiters” whose physical characteristics can be measured. Atmospheres of two of these planets have already been detected. We summarize the atmosphere detections and useful upper limits, focusing on the MOST albedo upper limit and H exosphere detection for HD209458b as the most...

Visual comfort is usually defined in terms of illumination level, with the consequent disparity of values found in publications. However, transitional spaces have different features, such as dynamism and adaptive process, compared to other static spaces in buildings. Therefore, other factors must be considered when assessing the visual response. This study focuses on the quality of light and at...

ABSTRACT Methane concentrations in Kano municipality have been attributed to the burning of solid and fossil fuels and industrial processes. Using an automatic gas sampling system, methane in the Kano atmosphere was determined. Its distribution in the municipality was skewed towards high frequency of low concentration with a mean and standard deviation of 0.61? 0.39 ?g/m3. Similarly the distri...