Using Plant-Based Biofilters to Purify Household Wastewater | AMNH https://www.amnh.org/learn-teach/curriculum-collections/young-naturalist-awards/using-plant-based-biofilters-to-purify-household-wastewater
This ecologically minded young naturalist tested the effectiveness of plant-based filters at removing key pollutants from wastewater.
Rainier Retrieving a Stromatolite from the Sahara