The eco guide to house plants

Plants help to purify the air and process out pollutantsBreathing is given remarkably little air time. But a comprehensive report on outdoor air quality worldwide emerged from the World Health Organisation recently, linking 3 million deaths a year to air pollution.It’s enough to keep you indoors. Unfortunately there’s declining air quality inside, too, particularly from concentrations of volatile organic compounds (VOCs). This chemical class includes formaldehyde and toluene and lead