Air conditioning units are expensive, loud and bad for the environment, but everyone needs to keep their homes cool. Thankfully, there’s another method that’s budget-friendly, great for the planet and even approved by NASA – plants! NASA-approved method of cooling your home Craig Morley, a gardening expert at Budget Seeds explained that you can harness the power of plants to cool your home for free this summer through a scientific process called transpiration. “Many people are aware that houseplants can improve the air quality of your home by circulating the air and removing pollutants. But no…