"How to grow fresh air" by Kamal Meattle

In his 2009 talk, activist Kamal Meattle reveals how three varieties of plants, arranged throughout a person's home, can produce measurably cleaner air.

The plants are Areca Palm, Mother-in-Law's Tongue, and Money Plant. Based on when and how the plants convert carbon dioxide into oxygen, Meattle says they literally help people grow fresh air.

Duration — 3:59