Carbon dioxide surface, warming the surface and the lower atmosphere. Less energy reaches the upper atmosphere, which is therefore cooler because of this absorption. Increases in atmospheric concentrations of and other long-lived greenhouse gases such as methane, nitrous oxide and ozone have correspondingly strengthened their absorption and emission of infrared radiation, causing the rise in average global temperature since the mid-20th century. Carbon dioxide is of greatest concern because it exerts a larger overall warming influence than all of these other gases combined and because it has a long atmospheric lifetime (hundreds to thousands of years). Not only do increasing carbon dioxide
Recreational use of nitrous oxide Recreational use of nitrous oxide Recreational use of nitrous oxide is the inhalation of nitrous oxide gas for its euphoriant effects. The gas is sometimes called Whippets, Laughing Gas, the Epiphany Drug, or Hippy Crack. In Australia, nitrous oxide bulbs are known as nangs. Nitrous oxide is a dissociative inhalant that can cause analgesia, depersonalisation, derealisation, dizziness, euphoria, and some sound distortion (flanging). In some cases, it may cause slight hallucinations and have a mild aphrodisiac effect. Research has also found that it increases suggestibility and imagination. Inhalation of nitrous oxide for recreational use, with the purpose of causing euphoria