It seems counterintuitive. Is it just greenwashing? Is it due to government regulation? Let's find out.

Dear Pablo: I had a home energy audit done and they recommended insulating my pipes. The estimated cost was quite high and I wonder, is it really worth it?

Image credit: Bernd Sieker, used under Creative Commons license. Dear Pablo: Does installing commercial rooftop solar PV (with the dark-colored PV cells) negate the effect of painting that same roof white to alleviate the "heat island" effect in