As part of a campaign promoting the Audi TDI clean diesel engines, Audi will donate $1 to The Nature Conservancy's voluntary carbon offset program for every Facebook user who joins the cause, up to $25,000.
The car maker says the new clean diesel engines reduce carbon emissions by 20 percent compared to gasoline engines and is 30 percent more fuel efficient.
The Nature Conservancy's voluntary carbon offset program features the Tensas River Basin as its first project. The Tensas River Basin Project, in the lower Mississippi Valley, counterbalances carbon emissions by reforesting private lands to capture and store carbon, as well as to restore critical habitats to native species.
You can also check out Audi's "Truth in Diesel" video at YouTube.
