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Treating wastewater isn’t easy, and forever chemicals are making it harder

Every human produces a little more than 4.5 ounces of excrement per day. Multiplied by the 2.2 million customers of the Philadelphia Water Department’s wastewater system, the cumulative daily dump equals about 620,811 pounds, or about 310 tons. The story of biosolids (treated sewage sludge) starts with clean water in the toilet bowls of the

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10 mins read
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Contemporary art comes to roost at the Audubon Center

Most birders have a “spark bird,” the species that ignited their passion for nature. Visual artist Deirdre Murphy, whose work blends scientific data with bird observations, has a “spark ornithologist.” Murphy credits John James Audubon, who revolutionized the field of ornithology with his detailed illustrations, as an early source of inspiration. “He’s my spark for

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2 mins read