Although model projections indicate increased El Niño/Southern Oscillation (ENSO) variability in the future, contemporary impacts of anthropogenic forcing on ENSO variability have been difficult to ascertain. This Perspective discusses these contemporary effects, outlining that an increase in post-1960 ENSO variability is likely related to greenhouse gas forcing.

A digital twin of Earth would fully integrate Big Data observations within an Earth–human system model, to assess the interactions between these subsystems. This Review explores the current progress in Big Data manipulation in Earth sciences providing pathways toward digital twins of Earth.

Extreme weather and climate events could increase ecosystem disturbances and, potentially, destabilize ecosystems, but different feedbacks between climate and ecosystems are often not accounted for. This Perspective proposes a framework to characterize ecoclimatic events and understand the role of human activities in driving them.

Ultrahigh-temperature (UHT) metamorphism represents the most extreme thermal conditions that the continental crust is capable of sustaining at 15–55 km depth. This Review assesses the characteristics of UHT metamorphism, the tectonic mechanisms, and the implications for metamorphism in present-day orogens.