Like this, step by step to solve greenhouse gas emission problem, is right direction. (dotearth.blogs.nytimes.com)
You have said that there must be a 5 % — 95 % split in solving our CO2 emission problem. (realclimate.org)
Did you know that repairing a serious emissions problem, such as a faulty oxygen sensor, can improve your gas mileage by as much as 40 percent? (hbchryslerdodgejeepram.com)