Most people now recognize the energy savings benefits of green buildings. These buildings use less water, energy, and other natural resources. In some cases, they can increase biodiversity, produce their own energy, and reduce the urban heat island effect. Recent research shows that green buildings can also improve the health and productivity of those who live or work inside them. In some cases, green buildings can produce the same benefits as spending time in nature, which can benefit people living in cold climates. Green buildings cost 5 percent to 10 percent more than conventional buildings. But detailed analyses show that the small increase in building costs has noticeable benefits on the health and wellness of those working or living inside—or even just near—such buildings. Energy Savings Buildings with green roofs, green walls, green interior decoration, or those surrounded by green infrastructure are all considered to be green buildings. These buildings usually contain algae, …