Carbon monoxide of carbon dioxide by electromagnetic radiation of wavelengths shorter than 169 nm. Due to its long lifetime in the mid-troposphere, carbon monoxide is also used as tracer of transport for pollutant plumes. Carbon monoxide is a temporary atmospheric pollutant in some urban areas, chiefly from the exhaust of internal combustion engines (including vehicles, portable and back-up generators, lawn mowers, power washers, etc.), but also from incomplete combustion of various other fuels (including wood, coal, charcoal, oil, paraffin, propane, natural gas, and trash). Large CO pollution events can be observed from space over cities. Carbon monoxide is, along with aldehydes, part
Chainsaws in popular culture Chainsaws in popular culture Chainsaws, the common logging and woodworking tool, are also a common sight in popular culture. Chainsaws have appeared in countless films being used for their intended purpose, but this rarely if ever is given a prominent role in the plot. More prominent however is portrayals of chainsaws as weapons or torture devices. Despite chainsaws having been around since the 1930s, they were not seen used as a weapon in film until the 1960s, possibly due to Hays Code censorship restrictions on portrayals of graphic violence. Among the earliest films to portray chainsaws as weapons are "Dark