Cambrian Sea-Level Change and Biodiversity: A New Timescale
Research reported in Nature Communications on 24 October 2026 examined links between sea-level change and biodiversity dynamics during the Cambrian SPICE e
Research reported in Nature Communications on 24 October 2026 examined links between sea-level change and biodiversity dynamics during the Cambrian SPICE e
A 20 October 2026 Nature news report described a large fossil-data analysis that may change how scientists interpret some of Earth's major extinction inter
Earth's lithosphere is divided into moving plates that interact at divergent, convergent and transform boundaries. These settings help explain the global d
Radiometric dating estimates the age of suitable minerals by measuring the proportions of radioactive parent isotopes and their decay products. It provides
Relative dating establishes the sequence of geological events without assigning an exact numerical age. It is a foundational skill because rocks often pres
The rock cycle describes the transformations that connect igneous, sedimentary and metamorphic rocks. It is not a fixed sequence: any rock can be uplifted,
Permafrost is ground that remains at or below freezing for at least two consecutive years. It occurs in high-latitude and high-elevation regions, wher