Atmospheric sciences Atmospheric sciences Atmospheric sciences are the study of the Earth's atmosphere, its processes, the effects other systems have on the atmosphere, and the effects of the atmosphere on these other systems. Meteorology includes atmospheric chemistry and atmospheric physics with a major focus on weather forecasting. Climatology is the study of atmospheric changes (both long and short-term) that define average climates and their change over time, due to both natural and anthropogenic climate variability. Aeronomy is the study of the upper layers of the atmosphere, where dissociation and ionization are important. Atmospheric science has been extended to the field of planetary
Effects of long-term benzodiazepine use an increased risk of dementia but the exact nature of the relationship is still a matter of debate. A later study found no such effects. Benzodiazepines when introduced in 1961 were widely believed to be safe drugs but as the decades went by increased awareness of adverse effects connected to their long-term use became known. There was initially widespread public approval but this was followed by widespread public disapproval, and recommendations for more restrictive medical guidelines followed. Concerns regarding the long-term effects of benzodiazepines have been raised since 1980. These concerns are still not fully answered. A review in 2006