Simulating 800,000 years of California earthquake history to pinpoint risks

3D view of one especially complex multi-fault rupture from the synthetic earthquake catalog developed by the Southern California Earthquake Center using a new earthquake modeling framework. Credit: Kevin Milner, University of Southern California Massive earthquakes are, fortunately, rare events. But that scarcity of information blinds us in some ways to their risks, especially when it […]

New satellites can pinpoint methane leaks to help us beat climate change

Claire, shown during prelaunch testing, has an imaging spectrometer to measure methane. (Courtesy of GHGSat/) On January 13, 2019, while trying to measure the greenhouse gas output of a mud volcano in Turkmenistan, a microwave-size satellite known as Claire stumbled upon something unexpected: an enormous cloud of methane spilling into frame from an area just […]

Sediment Layers Pinpoint Periods of Climatic Change

Just a few tens of thousands of years ago—a blink in geologic time—ice sheets covered a wide swath of the planet. Researchers have now determined precisely the cadence at which one of those ice masses retreated and disgorged icebergs into the Pacific Ocean, events that likely triggered substantial climatic changes. Extinct Ice The […]