Earth Sciences

Results 61 - 80 of 1543.

Life Sciences - Earth Sciences - 22.03.2020
Christmas Island discovery redraws map of life
Christmas Island discovery redraws map of life
The world's animal distribution map will need to be redrawn and textbooks updated, after researchers discovered the existence of ‘Australian' species on Christmas Island. The University of Queensland's Professor Jonathan Aitchison said the finding revises the long-held understanding of the location of one of biology and geography's most significant barriers - the Wallace line.

Earth Sciences - Physics - 16.03.2020
A deep dive into the upward mobility of rocks
Yale geologists have identified the deepest pieces of Earth's crust ever found in the United States or Canada - in the rolling hills of northern Connecticut. Tiny bits of quartz and other minerals, inside garnet crystals, tell the story of a tectonic escalator ride that started 100 miles below Earth's surface, some 400 million years ago.

Earth Sciences - Environment - 15.03.2020
Scientists quantify how wave power drives coastal erosion
The average power of waves hitting a coastline can predict how fast that coast will erode. Over millions of years, Hawaiian volcanoes have formed a chain of volcanic islands stretching across the Northern Pacific, where ocean waves from every direction, stirred up by distant storms or carried in on tradewinds, have battered and shaped the islands' coastlines to varying degrees.

Earth Sciences - Environment - 09.03.2020
Stone-age 'likes': Study establishes eggshell beads exchanged over 30,000 years
Stone-age ’likes’: Study establishes eggshell beads exchanged over 30,000 years
A clump of grass grows on an outcrop of shale 33,000 years ago. An ostrich pecks at the grass, and atoms taken up from the shale and into the grass become part of the eggshell the ostrich lays. A member of a hunter-gatherer group living in southern Africa's Karoo Desert finds the egg. She eats it, and cracks the shell into dozens of pieces.

Earth Sciences - Pharmacology - 06.03.2020
Seismic biomarkers in Japan Trench fault zone reveal history of large earthquakes
Channels McGill University News and Events Researchers find multiple faults with evidence of more than 10 meters of slip during past large earthquakes in the region hit by the 2011 Tohoku-Oki earthquake and tsunami In the aftermath of the devastating Tohoku-Oki earthquake that struck off the coast of Japan in March 2011, scientists were stunned by the unprecedented 50 meters of displacement along the fault, which ruptured all the way to the surface of the seafloor.

Earth Sciences - Environment - 04.03.2020
Smallest Homo erectus cranium in Africa and diverse stone tools found at Gona, Ethiopia
Smallest Homo erectus cranium in Africa and diverse stone tools found at Gona, Ethiopia
An international research team led by scientists from the U.S. and Spain, and including a University of Michigan geologist, has discovered a nearly complete cranium of an early human ancestor, estimated to about 1.5 million years ago, and a partial cranium dated to about 1.26 million years ago, from the Gona study area in Ethiopia's Afar State.

Earth Sciences - Environment - 02.03.2020
Ocean changes almost starved life of oxygen
Chemical changes in the oceans more than 800 million years ago almost destroyed the oxygen-rich atmosphere that paved the way for complex life on Earth, finds new research involving UCL scientists. Then, as now, the planet had an oxidising atmosphere driven by phytoplankton, which release oxygen during photosynthesis.

Earth Sciences - Computer Science - 28.02.2020
Machine learning picks out hidden vibrations from earthquake data
Machine learning picks out hidden vibrations from earthquake data
Technique may help scientists more accurately map vast underground geologic structures. Over the last century, scientists have developed methods to map the structures within the Earth's crust, in order to identify resources such as oil reserves, geothermal sources, and, more recently, reservoirs where excess carbon dioxide could potentially be sequestered.

Environment - Earth Sciences - 27.02.2020
Turning back the clock on blue carbon tolls a warning bell for the environment
A new study of a Scottish sea loch which reconstructs 5,000 years of its climate history is casting doubt on hopes that 'blue carbon' could help slow the rate of global heating. 'Blue carbon' is the term used to describe atmospheric carbon which has been captured by underwater vegetation and stored under the sea bed.

Earth Sciences - Physics - 26.02.2020
Machine learning reveals earth tremor and slip occur continuously, not intermittently
Machine learning reveals earth tremor and slip occur continuously, not intermittently
Cascadia findings also apply to San Andreas Fault and other earthquake zones, suggesting universal underlying physics that could someday support quake forecasting The work tells us that the physics of friction on faults appears to have universal characteristics-something we suspected but could not prove.

Earth Sciences - Environment - 26.02.2020
Stone tools reveal humans survived a volcanic super-eruption
Stone tools reveal humans survived a volcanic super-eruption
The recent discovery of stone tools in India has revealed that humans survived and coped with one of the largest volcanic events in human history. The intensity and impact of the historic Toba super-eruption in Indonesia sparked a long-running debate among researchers involving climatic, geological, archaeological and genetic evidence, until now.

Astronomy / Space Science - Earth Sciences - 24.02.2020
The seismicity of Mars
The seismicity of Mars
Fifteen months after the successful landing of the NASA InSight mission on Mars, first scientific analyses of ETH Zurich researchers and their partners reveal that the planet is seismically active. The recorded data enables a better understanding of the interior of Mars, the primary goal of the InSight mission.

Palaeontology - Earth Sciences - 14.02.2020
Were dinosaurs warm blooded? Their eggshells say yes
Were dinosaurs warm blooded? Their eggshells say yes
A Yale-led study turns up the heat on a key question about dinosaurs' body temperature: Were they warm-blooded or cold-blooded? According to a new technique that analyzes the chemistry of dinosaur eggshells, the answer is warm. " Dinosaurs sit at an evolutionary point between birds, which are warm-blooded, and reptiles, which are cold-blooded.

Environment - Earth Sciences - 11.02.2020
Plant nutrient map sheds light on carbon sinks
Natural areas that can absorb huge quantities of carbon dioxide could play a crucial role in combatting climate change. However, our ability to identify and employ these carbon sinks has been hobbled by a lack of information about where plants grow best. Now, research from Stanford University reveals a global map of areas where insufficient nutrients in the soil could limit plant growth.

Astronomy / Space Science - Earth Sciences - 10.02.2020
Reveals details of
Reveals details of "golf ball asteroid"
A tilted orbit may explain the asteroid Pallas' highly cratered surface. Asteroids come in all shapes and sizes, and now astronomers at MIT and elsewhere have observed an asteroid so heavily cratered that they are dubbing it the "golf ball asteroid." The asteroid is named Pallas, after the Greek goddess of wisdom, and was originally discovered in 1802.

Earth Sciences - Environment - 10.02.2020
Geothermal energy: drilling a 3,000 metres deep well
Geothermal energy: drilling a 3,000 metres deep well
Researchers from the University of Geneva have studied the seismic activity recorded during the drilling of a geothermal well and shown that it did not spark any major earthquake. Although stopping climate change is challenging, it is imperative to slow it down as soon as possible by reducing greenhouse gas emissions.

History / Archeology - Earth Sciences - 05.02.2020
Prehistoric Skeleton Discovered in Southern Mexico
A prehistoric human skeleton found on the Yucatán Peninsula in southern Mexico is at least 10,000 years old and most likely dates from the end of the most recent ice age, the late Pleistocene. An international research team led by geoscientists from Heidelberg University studied the remains of the approximately 30-year-old woman.

Environment - Earth Sciences - 31.01.2020
Warming oceans could cause Antarctic Ice Sheet collapse, sea level rise
Ice calving from the front of Thurston Island off of western Antarctica on Nov. 5, 2014. The image was taken as part of NASA's Operation IceBridge, an airborne science mission to study Earth's polar ice. Photo by NASA/Jim Yungel A new study suggests the Western Antarctic Ice Sheet is less stable than researchers once thought.

Environment - Earth Sciences - 30.01.2020
Rivers are warming at the same rate as the atmosphere
Rivers are warming at the same rate as the atmosphere
Researchers at EPFL and the Swiss Federal Institute for Forest, Snow and Landscape Research (WSL) have found that the temperature of Swiss rivers is rising steadily. This situation is straining ecosystems and could limit the use of this water in Switzerland's nuclear and hydropower industries. For a long time, meltwater from snow and glaciers has limited the warming of the Swiss rivers, allowing them to maintain a relatively low temperature throughout the year.

Earth Sciences - 28.01.2020
Alfred T. Anderson, scientist who studied rocks to recreate volcanic eruptions, 1937-2020
An exhibit at the University of Chicago Library this winter contains a wooden baseball bat worn flat on one side, next to a bag of rocks collected from the slopes of a Japanese volcano. The bat belonged to UChicago geoscientist Prof. Alfred T. Anderson, Jr. "Fred found that was the perfect tool for smashing rock samples," said his colleague Prof. Andy Davis.

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