The oxygenation of Earth's surface -- which transformed the planet into a habitable haven for all life as we know it -- may have been the consequence of global biogeochemical feedbacks, rather than the product of discrete planetary-scale biological and tectonic revolutions as proposed, according to a new study.
Bridges are the most vulnerable parts of a transport network when earthquakes occur, obstructing emergency response, search and rescue missions and aid delivery, increasing potential fatalities.
Satellite data from the European Space Agency (ESA) has now been used as the basis for new insights on the deep structure of the continent Antarctica. Scientists from Kiel University (CAU) recently published their discoveries in the 'Journal of Geophysical Research: Solid Earth' in cooperation with scientists from the British Antarctic Survey, Great Britain, and Delft University of Technology in the Netherlands.
Researchers at Oxford University, together with and international colleagues, have discovered jet stream patterns that could affect up to a quarter of global food production.
Stormquakes are a phenomenon characterized by seismic activity originating at the ocean floor due to powerful storms. Heavy storms, like hurricanes or nor'easters, can create seismic waves as large as magnitude 3.5 quakes. These tremors caused by the effects of storms on the seafloor are what researchers call stormquakes. Catherine de Groot-Hedlin, who was part of the group that first observed stormquakes, will discuss their properties and meteorological significance at the 178th ASA Meeting.
A peer-reviewed assessment cautions that ramping up bioenergy projects requiring large stretches of land could send renewable energy sector down an unsustainable path.
A survey of coral reef cores on the Great Barrier Reef has revealed how it has responded to recent periods of rapid sea-level rise. The study, covering the past 9000 years, has revealed a system in delicate balance.
New study provides the first evidence that thinning ice shelves around Antarctica are causing more ice to move from the land into the sea.
Quantum nature of hydrogen bonds in water manifests itself in peculiar physicochemical isotope effects: while deuteration often elongates and weakens hydrogen bonds of typical hydrogen-bonded systems composed of bulky constituent molecules, it elongates but strengthens hydrogen bonds of water molecular aggregates. The origin of this unique isotope effect of water molecules remains to be elucidated at the molecular level. A recent experimental study on the sublimation of isotope-mixed water ice has tackled this issue.
How did life survive the most severe ice age? A McGill University-led research team has found the first direct evidence that glacial meltwater provided a crucial lifeline to eukaryotes during Snowball Earth, when the oceans were cut off from life-giving oxygen, answering a question puzzling scientists for years.