Houston Business Journal: When all they had were crude tools and their imaginations, building designers made the most of both. For centuries, functional, sustainable buildings that used little or no electricity weren’t part of a ‘green movement.’ They were a necessity. ‘During the early 1900s, buildings were designed to encourage air to flow through them,’ says architect Jody Henry, project manager for SHW Group. ‘This was one of the ‘greenest’ things we could do, especially in the hot and humid …