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Zinc is a marine nutrient that may have been limited in the early oceans. Estimates of marine zinc availability through time suggest that values were instead near-modern during the Proterozoic eon.
The West Antarctic Ice Sheet is contributing to sea-level rise, but temperature trends in the region have remained uncertain. A complete temperature record for Byrd Station in central West Antarctica, spanning from 1958 to 2010, establishes West Antarctica as one of the fastest-warming regions globally.
Large-scale ecological disturbances are expected to alter climate by disrupting ecosystem function, but the climatic perturbation can be hard to detect. An analysis of forests in British Columbia reveals a warmer, drier summer following pine-beetle tree kill.
Questions about the sensitivity of Earth's climate to greenhouse gas forcing challenge our understanding of climate change. Matthew Huber looks at what we can learn from past greenhouse periods.
People have changed the world irrevocably. Jan Zalasiewicz discusses whether formalization of the Anthropocene as an epoch in geological time will help us understand our place in Earth history.
The current assessment of climate change is nearing completion. It is now time to consider how best to provide increasingly complex climate information to policymakers, suggests Thomas F. Stocker.
Numerous earthquakes have occurred at subduction zones in the past 5 years, and some were devastating. Kelin Wang describes what we have learned about the seismicity of the shallow zone.
Readily available O2 is vital to life as we know it. James Kasting looks at how and when the first whiffs of oxygen began to reach the Earth's atmosphere.
Ocean acidification, caused by the uptake of anthropogenic carbon dioxide, is a significant stressor to marine life. Ulf Riebesell charts the rapid rise in ocean acidification research, from the discovery of its adverse effects to its entry into the political consciousness.
