Scientist says cleaning indoor air could make us healthier and smarter
reminds me of a 4 minute TED talk I watched a while back, you can grow fresh air with only 3 plants <a href="https://www.ted.com/talks/kamal_meattle_how_to_grow_fresh_air/" rel="nofollow">https://www.ted.com/talks/kamal_meattle_how_to_grow_fresh_ai...</a>