Early mammals weren’t all loners, as scientists thought – some already lived in pairs alongside the dinosaurs
Read More 6 minute read Nature Fern stems reveal secrets of evolution – how constraints in development can lead to new forms The lacy frond of the intermediate wood fern (Dryopteris intermedia). Jacob S. Suissa, CC BY-ND Jacob S. Suissa,… byJacob SuissaDecember 4, 2025