Nearly 42,000 years ago, when Earth’s magnetic fields reversed, this triggered major environmental changes, extinction events, and long-term changes in human behavior, a new study reports. The findings, made possible by a new radiocarbon record derived from New Zealand’s ancient kauri trees, raise important questions about the evolutionary impacts of […]

A transmitted light view through a 200-micron section of a peridotite sample, showing the three main minerals — olivine (clear-green), orthopyroxene (grey-green) and garnet (pink). Credit: Dr. Emma Tomlinson, Trinity College Dublin. Geologists have developed a new theory about the state of Earth billions of years ago after examining the […]

HiRISE camera view of Krupac crater on Mars featuring gullies along the rim and RSL lower down the crater wall. Credit: NASA/JPL/University of Arizona A team of researchers led by SETI Institute Senior Research Scientist Janice Bishop, a member of the SETI Institute NASA Astrobiology Institute (NAI) team, has come up with […]

Top left and the bottom right are Google Earth satellite images of the Brumadinho tailings dam taken before and after the collapse on 25 January 2019. Top right and bottom left show precursory movement across the dam (red and yellow colours), which the researchers analysed to find that the collapse […]

On Earth snow condenses at altitude because air dilates during ascending movements, and thus cools (at the rate of 1°C approximately every 100 m). On Pluto, methane ice forms on the peaks of mountains when they are high enough to reach upper atmospheric levels, which are hotter and rich in […]

A 2019 eruption of Steamboat Geyser in the Norris Geyser Basin of Yellowstone National Park. The geyser’s first documented activity was in 1878, and it has turned off and on sporadically since, once going for 50 years without erupting. In 2018 it reactivated after a three-and-a-half-year hiatus, for reasons that […]

ANIMATION An international research team that included three scientists from the University of Rhode Island’s Graduate School of Oceanography has discovered single-celled microorganisms in a location where they didn’t expect to find them. “Water boils on the (Earth’s) surface at 100 degrees Celsius, and we found organisms living in sediments at […]

Overview of the study area and the schematic illustration of interaction of fault motion and the seafloor subsidence. Credit: University of Tsukuba University of Tsukuba researchers have developed a state-of-the-art model, which has revealed major complexity in rupture processes even in simple oceanic faults. Researchers from the University of Tsukuba […]

As glaciers flow outward from the Greenland Ice Sheet, what lies beneath them offers clues to their role in future ice thinning and sea-level rise contribution. Outlet glaciers are rivers of ice flowing within the cracks of the bedrock and draining into the surrounding sea. They retreat and start to […]

The quantitative model used in the study explains the enigmatic melt degrees and layered structures observed in most cratons on Earth. Monash University geologists have shed new light on the early history of the Earth through their discovery that continents were weak and prone to destruction in their infancy. Their […]