Environment How Ancient Diets Shaped Our Brains Early hominins may have bashed bones to harvest fatty nutrients from marrow and brains, creating a cerebral expansion that kickstarted evolution. Richard Kemeny
Social Justice What to Make of the Iranian Revolution 40 Years Later As relations between the U.S. and Iran grow increasingly fraught, looking back at one of the watershed moments in the countries shared history. Ian Wallace
Economics Will a Looming Subway Crisis Bring New York City Congestion Pricing? A combination of a decaying subway system, low gas prices, and ride-hailing services has made traffic in Manhattan worse than ever. Laura Bliss
Economics Black Market Timber Continues to Find Its Way From Africa to the E.U. A new report accuses European companies of importing illegally harvested wood from the Democratic Republic of Congo. Ashoka Mukpo
Environment The Rapidly Warming Gulf of Maine Puts Sea Turtles at Increased Risk of Stranding Warmer waters in the region lead to an increased threat of cold-stunning because turtles stick around longer before heading south. Anna Robuck
Environment Can a Hashtag Inspire People to Keep Their Communities Clean? The #trashtag challenge inspired people to clean up beaches, parks, rivers, or just random trash strewn on the street. Linda Poon
Environment Why Tropical Cyclone Idai Had Such a Devastating Impact The storm provides a grim prospect of the future of tropical cyclones in a region under continued threat from climate change. Jennifer Fitchett
Social Justice To Prevent School Shootings, Texas Legislators Want to Focus on Mental Health Advocates have raised concerns that this approach can stigmatize people with mental illness as if they're inherently violent. Marissa Evans
Environment Humans Are Producing Too Much Carbon Dioxide for Forests to Absorb A recent study shows that, while intact forests are playing a large role in absorbing CO2, it's only a fraction of the amount human activity creates. Taran Volckhausen
Social Justice Alleged War Criminals May Be Granted Amnesty by El Salvador’s Parliament The move proposed by conservatives in El Salvador's parliament has outraged the families of victims and leaders in the Roman Catholic Church. Raymond Bonner