Each day brings new numbers that reveal the possibility of a slowing economy. Nobody really knows if there is actual deterioration going on out there -- or if a macro slide is in the offing. But the word on the street is that recession is coming, that recession is inevitable. It's especially confusing to executives and entrepreneurs because business seems to be holding up pretty well in the face of this crumbling and off-putting market psychology. So, while we're waiting to find out if a downturn will drown us, I thought I'd take stock. Without revealing my age (I'm still a vigorous and engaged CEO), I realized that this could be the fifth or sixth recession I've experienced in my working lifetime; it depends on whether we want to put an asterisk next to the Internet implosion of

The transportation sector is a powerhouse when it comes to the amount of fuel and energy it consumes. Although progress may be limited in curbing fuel and energy consumption by the commercial aviation sector, the automotive industry is poised to take great strides in the coming years.

In the face of an increasingly industrialized world -- and a world facing unknown threats from climate change -- the importance of driving up energy efficiency across sectors becomes crystal clear.

Constructing a clean and green future for the planet starts at the ground floor and continues all the way up to the penthouse.