This visualization is the first global tomographic model constructed based on adjoint tomography, an iterative full-waveform inversion technique. The model is a result of data from 253 earthquakes and 15 conjugate gradient iterations with transverse isotropy confined to the...
Nine of the hottest years in human history have occurred in the last decade. Without a major shift in this climate trajectory, the future of life on Earth is in question. Should humans, whose fossil-fueled society is driving climate...
An enduring question in geology is when Earth's tectonic plates began pushing and pulling in a process that helped the planet evolve and shaped its continents into the ones that exist today. Some researchers theorize it happened around four...
Scientists combing through databases of earthquakes since the early 1990s have discovered a possible defining moment 10-15 seconds into an event that could signal a magnitude 7 or larger megaquake. Likewise, that moment—gleaned from GPS data on the peak rate...
Cistern Spring in Yellowstone National Park is home to the elusive archaeon Nanopusillus acidilobi. Credit: ORNL A microbial partnership thriving in an acidic hot spring in Yellowstone National Park has surrendered some of its lifestyle secrets to researchers at the Department...
Aerial view of Bardarbunga volcano, Iceland. Credit: © adammajor / Fotolia A spectacular six-month Icelandic lava field eruption could provide the crucial key for scientists to unlock the role aerosols play in climate change, through their interactions with clouds. An international...
Repeated catastrophic ice discharges from western North America into the North Pacific contributed to, and perhaps triggered, hemispheric-scale changes in the Earth's climate during the last ice age, new research published online today in Science reveals. The discovery provides new insight into...
Caption Recurrent food poisoning induces a pro-inflammatory enzyme (green) that disrupts the body's ability to detoxify resident normal gut bacteria. Credit: Jamey Marth A startling discovery published today in the journal Science reveals how your past history of minor bacterial infections...
Scanning the pristine skies above the Amazon rainforest revealed that small aerosol particles that form naturally in the upper atmosphere are carried to the lower atmosphere by rapid downdrafts associated with rainfall. There, volatile organic compounds (VOCs) emitted by...
Researchers have shown that over the past two thousand years, volcanoes have played a larger role in natural temperature variability than previously thought, and their climatic effects may have contributed to past societal and economic change. The researchers, led by...
A pioneering technique that captures precisely how mountains bend to the will of raindrops has helped to solve a long-standing scientific enigma. The dramatic effect rainfall has on the evolution of mountainous landscapes is widely debated among geologists, but new...