Hello dear Steemians!
After watching a TED-talk "How to grow fresh air" with Kamal Meattle, I decided to compile the information he provides, so that any steemian who might live in a small room with bad air, in a polluted city somewhere, could improve their own air quality and general well-being.
It boils down to having about four Areca palms, two large "money plants" they are also called "the devil's ivy", and for the bed-room you will need about eight "snake plants" or "Mother-In-Law's Tongue", (the plant names are weird don't ask me why but they are weird I know)...😇
The reason to keep the "snake plants" in the bedroom is because they are one of the few plant's that produce oxygen at night. Most other plants produce CO2 during night time and oxygen during the day, there for better kept in another room in your apartment or house, if possible.
Also plants look pretty and they will give a nice "jungle vibe" to your room!
Or as my dear steemit friend 
"plants those goldenratio energy molecular fibonacci transformers,
they are technology they are friends"
Enjoy!
Source: How to grow fresh air | Kamal Meattle TED talk
Source: NASA Clean Air Study wikipedia.org
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