Global Warming - Hoax?

[101lifts2]

Originally Posted by ericr

....I'm not saying large metro areas dont suffer from all the traffic in them, they do. But if you shut all the cars down it would clear up in a matter of days, not years. There have also been more health problems since they started using cats on vehicles that no one will admit to. Yes, carbon dioxide wasn't real fun to breath but it really isn't that dangerous, mostly an irritant. However carbon monoxide that is made by converters is poison to humans. But it's ok since it's saving the planet!

Three-way cats convert HC, NOx, CO and NMHC to H2O and CO2, not the other way around. HCs and COs are harmful to humans and NOx and NMHC are harmful to the ozone. Converters are a good thing as with fuel injection control, but when you start to regulate more stringent emissions, you end up polluting more due to producing more emission contrtol parts (see diesel exhaust fluid injection).