Cretaceous-Paleogene (K-Pg) boundary: The geological boundary marking the end of the Cretaceous period and the beginning of the Paleogene period, characterized by a mass extinction event.

Hyaenodonts, an extinct group of carnivorous mammals that thrived during the Paleogene period, are particularly interesting due to their diverse adaptations and ecological roles. Recent research ...

Late or missed menstrual period Late period: 5 or more days late compared to normal menstrual cycle Missed period: no menstrual flow for more than 6 weeks Teen not using any birth control that stops ...

Cramps aren’t always a sign of menstruation. Many people develop cramps when they don’t have their period. There are various causes of cramps with no period. Issues related to pregnancy are often to ...

Implantation bleeding is rust-colored, light spotting. By comparison, your period is a steady, light to heavy flow of bright to dark red blood. Implantation bleeding occurs when you’re pregnant, while ...

There are also maps showing the percentage of mean rainfall (1961–90 average) received for each drought period. Map: Example map from the Weekly Rainfall Update showing the percentage of mean rainfall ...

The year 2024 is on track to be the warmest year on record after an extended streak of exceptionally high monthly global mean temperatures External site: Global Climate Pulse The Copernicus Climate ...

Photos from around the region, including readers' pictures, plus reports of disruption to schools and transport services as the Birmingham and the West Midlands deals with the snow ...