20% could be the reduction in nitrogen dioxide by keeping houseplants. According to new research led by the University of Birmingham and the Royal Horticultural Society, houseplants were able to significantly reduce this common pollutant. The plants used in the experiment included peace lily, corn plant and fern arum.
13% is the amount that expensive dietary supplements could be sucking from your disposable income, according to research out of the University of South Australia. Real food was found to be a much cheaper and more sustainable action plan.