Although not the most exciting topic you will find going around, I found this video interesting. Kamal Meattle an environmental activisttalks about how the study showed a 20% increase in human productivity by using three types of plants.
Our office lacks plant life, but after reading this I am compelled to head out to Palmers Garden Centre and get these scattered around the office. With these productivity gains I would suggest you do the same!
Researcher Kamal Meattle shows how an arrangement of three common houseplants, used in specific spots in a home or office building, can result in measurably cleaner indoor air and work productivity.