How to get free ventilation without sacrificing heat (or cool)Something has piqued my interest for some time: the transfer of heat to make something cooler or warmer than the ambient air without mechanical means.  Living in the hot and humid...

Termite Architecture:  A Lesson in BiomimicryTermites in America are largely unseen, building their unwelcome nests inside walls.  Termites in Africa, on the other hand, are quite noticeable: their earthen nests can extend up to 30 feet off the ground!  (I...