Kamal Meattle on how to grow fresh air

"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." (www.ted.com) In fact, he argues that a human would not die even one would be sealed up in a giant bottle so long as the certain amount of these three plants would be in there as well. Watch it!