When tropical oceans were oxygen oases

Research reveals when and why ancient tropical seas transitioned from oxygen oases to marine dead zones, providing clues to the long-term evolution of oceanic environments.

The hidden risk of combined stressors for soils

Global change—a term that encompasses climate change and phenomena such as changes in land use or environmental pollution—is increasingly putting ecosystems around the world under pressure. Urban soils in particular are ...

Tiny earthquakes reveal hidden faults under Northern California

By tracking swarms of very small earthquakes, seismologists are getting a new picture of the complex region where the San Andreas fault meets the Cascadia subduction zone, an area that could give rise to devastating major ...

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