How to Grow Fresh Air: 50 House Plants that Purify Your Home or Office

Wolverton, a former NASA scientist, bases the book on research into the ability of plants to filter out toxins such as formaldehyde, benzene and ammonia. The book offers a list of the 50 best air purifying plants, with detailed descriptions of their effectiveness, maintenance and aesthetic value. It also explains how plants improve humidity and reduce stress, making homes and offices healthier.