I stay at home and look after the children <a href=" http://theartofandyellis.com/atenolol-tablets-usp-50-mg.pdf ">tenormin tablets 25mg</a> Emissions of carbon dioxide have been responsible for over half of the warming influences to date. Methane, carbon monoxide, halo-carbons and nitrous oxide also have a significant warming influence.  The major cooling influences are NOx gases, aerosols (like sulphates and organic carbon) and changes in land albedo (how shiny it is).  The effect aerosols have on clouds also has a large cooling effect, though there is significant uncertainty in quantifying this.