Officials said a train accident in southern Mexico injured at least 15 people and halted traffic along a rail line connecting the Pacific Ocean with the Gulf of Mexico. The Interoceanic Train linking the states of Oaxaca and Veracruz derailed as it passed a curve near the town of Nizanda. In a message on X Sunday, Oaxaca state Gov. Salomon Jara said several government agencies had reached the site of the accident to assist the injured.

Something about a warm, flickering campfire draws in modern humans

Scientists are making inroads in understanding one of the central mysteries of human reproduction: Why do women’s eggs deteriorate as they age? The broad strokes have been well-known - the ticking of a woman’s biological clock increases risk of miscarriage and infertility, often caused by eggs with the wrong number of chromosomes, the structures that carry DNA.Subscribe to The Post Most newsletter for the most important and interesting stories from The Washington Post. Researchers who presented