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An unexpected source of methane? Your local sewage plant.

Wastewater treatment plants are typically overlooked when it comes to reducing greenhouse gasses, but new research from Princeton University reveals the plants emit twice as much methane as previously thought. Methane is a particularly potent greenhouse gas and the treatment plants should be part of any plan to reduce emissions, according to the

Native Plants Are Hiding Up High, but Invaders Are Catching Up

Far from pristine outposts of nature, mountains across the world are being rapidly colonized by non-native plants that spread uphill along roads. Mountain ranges are home to numerous plant and animal species, many of which are specifically adapted to life at high altitudes and occur nowhere else on Earth. But new research suggests

Serotonin: A Controversy That Never Was

The media went crazy when a study showed low serotonin doesn’t cause depression—but this was something scientists had known all along. The confusion caused some patients to go off effective psychiatric medications, exposing an information gap it’s been hard to bridge. We can do better, and here’s how. By Ben Rein For decades

Navigating the ethics of ancient human DNA research

Paleogenomic research has expanded rapidly over the past two decades, igniting heated debate about handling remains. Who gives consent for study participants long gone — and who should speak for them today? By Emiliano Rodríguez Mega The 2022 Nobel Prize in physiology and medicine has brought fresh attention to paleogenomics, the sequencing of