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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On Sept. 27, 2025, a wood thrush flew past the David Rittenhouse Laboratory at the University of Pennsylvania on its way to Central America. We know this because a tiny solar-powered radio transmitter on the bird’s back sent out a signal that was picked up by a receiver on the roof of the building. That
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On June 5, 1926, a family of five from Iowa, the McHenrys, arrived in Philadelphia to visit the recently opened Sesquicentennial International Exhibition. John Wanamaker, who had proposed the idea 10 years earlier, envisioned the greatest world’s fair in history — an “astounding presentation of the capacity and productive power of the United States,” he
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At 86, Chestnut Hill resident Sandra Folzer regularly smashes running world records, but her pursuit of physical excellence is secondary to her environmental goal: to remove single-use plastics from racing. In 2024, Folzer, a breast cancer survivor, shaved an astonishing 30 minutes off the 12K record in the women’s masters 85-89 age category. The next
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When a crowd comprised of more than 60 renters, homeowners, organizers and representatives gathered on May 7 in Southwest Philadelphia’s Kingsessing neighborhood, they had one message: “The renters united will never be defeated.” Led by One PA, a statewide community organizing group, the rally was the latest move in the ongoing effort to secure 925
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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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Some people turn to the ocean for philosophical reflection. The vastness, the rhythm of crashing waves — it gets the mind pondering. But for me, farms teach the same lesson on a more human scale. On a farm, a particular crop may only be around for a few weeks or months. You have a limited
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Julian Bender spent most of his weekends in the spring and summer of 2024 dedicated to one project: creating a bikepacking route through the Pine Barrens. He mapped out campgrounds and sites of natural and historical interest. He rode drafted routes, ruling out options that weren’t suitable for bikes due to flooding or overly soft
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One night in July 2016, Jean-Pierre Lokombe woke up to a group of armed men banging on the door of his home in a small village in the Democratic Republic of Congo. The men were part of the Allied Democratic Force, one of the deadliest of the more than 100 rebel groups that rape, kill
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Data center development in Pennsylvania is booming. Last year, U.S. Sen. Dave McCormick and President Donald Trump announced $90 billion in private investments for artificial intelligence (AI) infrastructure, data centers and energy projects across the state. Today, according to the Data Center Proposal Tracker, Pennsylvania has 52 data centers, and there are at least 53
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