A wildlife photographer stumbled upon one of the oldest and largest known collections of dinosaur footprints, dating back about 210 million years to the Triassic Period, high in an Italian national park near the 2026 Milan Cortina Winter Olympic venue of Bormio, officials announced Tuesday. The discovery in the Stelvio National Park was striking for the sheer number of footprints, estimated at as many as 20,000 over some five kilometers (three miles), and the location near the Swiss border, onc

Subscribe to The Post Most newsletter for the most important and interesting stories from The Washington Post. Almost everything you eat passes through your gut microbiome, the community of trillions of bacteria, viruses and other microbes that live in your intestines. These microbes play a critical role in your health. One reason is that they produce short-chain fatty acids. These special compounds protect your colon and boost your gut health. They help lower inflammation, regulate your immune

The nascent LGBTQ+ rights movement and the Christian right each strongly shaped the early years of HIV/AIDS, a historian explains.