Early mammals weren’t all loners, as scientists thought – some already lived in pairs alongside the dinosaurs
Read More 6 minute read Earth What are climate tipping points? They sound scary, especially for ice sheets and oceans, but there’s still room for optimism Meltwater runs across the Greenland ice sheet in rivers. The ice sheet is already losing mass and could… byAlexandra A PhillipsNovember 11, 2025