Why it's called "An Inconvenient Truth" ?

“An Inconvenient Truth” is a movie that talks about Global Warming, the rising CO2 emission around the world and the use of energy. It’s called “An Inconvenient Truth” because the emission of CO2 causes many problems. Also it might force us to change our life style to reduce our carbon footprint which is uncomfortable for many because they are used to their routine and it’s hard to change it.