For centuries there has been a known method of cooling air, using nothing but water. The idea, based on concept of evaporation allow for hot dry air to flow into contact with water, causing that water to evaporate, thus cooling and moisturizing the air. While there have been individuals who have used this method quite sparsley over the past couple thousand years, Emerging Objects has now used 3D printing to advance the method, with the fabrication of their ceramic 3D printed Cool Bricks. These blocks can be put together to form entire walls which can be placed inside of a building. Read and see more on these Cool Bricks at: http://3dprint.com/41447/3d-printed-cool-brick/