Roots meshed in waste materials could clean dirty water
Plant roots enmeshed in layers of discarded materials inside upright pipes can purify dirty water from a washing machine, making it fit for growing vegetables and flushing toilets, according to Penn State horticulturists. "Our global fresh water supplies are fast depleting," said Robert D. Cameron, doctoral student in horticulture. "So it is critical that we begin to look at alternatives on how we can take wastewater and turn it into a resource." (more)