Green Tip of the Week: Revolving doors...

Commercial buildings make up 40% of CO2 emissions worldwide (and for reference, cars make up only 35%). Between the heating and cooling systems and electricity usage alone, these buildings can be an incredibly draining energy source.

What can you do to help?

Other than putting a note in the suggestion box for solar panels and better insulation, simply use the revolving doors. Yes, I'm serious. If these buildings only had the revolving door option, they could be saving about 1.5% of energy required to heat/cool the place. That may sound miniscule, but imagine if every building in NYC adopted this rule.

That would be quite helpful I'd say.