Popular Earth News and Current Events

Popular Earth News and Current Events, Earth News Articles.
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Older than the moon
Geochemist Matt Jackson finds that only the hottest, most buoyant mantle plumes draw from a primordial reservoir deep in the Earth. (2017-02-06)

'Quartz' crystals at the Earth's core power its magnetic field
Scientists at the Earth-Life Science Institute at the Tokyo Institute of Technology report in Nature (Fen. 22, 2017) unexpected discoveries about the Earth's core. The findings include insights into the source of energy driving the Earth's magnetic field, factors governing the cooling of the core and its chemical composition, and conditions that existed during the formation of the Earth. (2017-02-22)

What did Earth's ancient magnetic field look like?
New work from Carnegie's Peter Driscoll suggests Earth's ancient magnetic field was significantly different than the present day field, originating from several poles rather than the familiar two. Then, shortly after our planet's core solidified, Driscoll's work predicts that Earth's magnetic field transitioned to a 'strong,' two-pole one. (2016-06-24)

Earth's core and mantle separated in a disorderly fashion
Plumes of hot rock surging upward from the Earth's mantle at volcanic hotspots contain evidence that the Earth's formative years may have been even more chaotic than previously thought, according to new work from a team of Carnegie and Smithsonian scientists published in Nature. (2018-01-24)

Just what sustains Earth's magnetic field anyway?
Earth's magnetic field shields us from deadly cosmic radiation, and without it, life as we know it could not exist here. The motion of liquid iron in the planet's outer core, a phenomenon called a 'geodynamo,' generates the field. But how it was first created and then sustained throughout Earth's history has remained a mystery to scientists. New work sheds light on the history of this incredibly important geologic occurrence. (2016-06-01)

Early Earth haze may have spurred life, says University of Colorado study
Hazy skies on early Earth could have provided a substantial source of organic material useful for emerging life on the planet, according to a new study led by the University of Colorado at Boulder. (2006-11-06)

Site of asteroid impact changed the history of life
The impact of the asteroid heated organic matter in rocks and ejected it into the atmosphere, forming soot in the stratosphere. (2017-11-10)

Up, up and away, in the name of science education
US researchers extol the virtues of high-altitude balloons for science education in a research paper published in the International Journal of Learning Technology. According to Jeremy Straub of the University of North Dakota in Grand Forks, 'High-altitude balloons can carry student and scientific payloads to the boundaries of space.' (2015-06-29)

McGill researchers find oldest rocks on Earth
McGill University researchers have discovered the oldest rocks on Earth -- a discovery which sheds more light on our planet's mysterious beginnings. These rocks, known as (2008-09-25)

Geologists point to outer space as source of the Earth's mineral riches
According to a new study by geologists at the University of Toronto and the University of Maryland, the wealth of some minerals that lie in the rock beneath the Earth's surface may be extraterrestrial in origin. (2009-10-18)

Climate game changer
New research from University of Alberta and University of Vienna microbiologists provides unparalleled insight into the Earth's nitrogen cycle, identifying and characterizing the ammonia-oxidizing microbe, Nitrospira inopinata. (2017-08-23)

Ocean floor geysers warm flowing sea water
An international team of earth scientists report movement of warmed sea water through the flat, Pacific Ocean floor off Costa Rica. The movement is greater than that off midocean volcanic ridges. The finding suggests possible marine life in a part of the ocean once considered barren. (2008-09-22)

Viruses -- lots of them -- are falling from the sky
An astonishing number of viruses are circulating around the Earth's atmosphere -- and falling from it -- according to new research from scientists in Canada, Spain and the US. The study marks the first time scientists have quantified the viruses being swept up from the Earth's surface into the free troposphere, beyond Earth's weather systems but below the stratosphere where jet airplanes fly. The viruses can be carried thousands of kilometres there before being deposited back onto the Earth's surface. (2018-02-06)

All missions on board for NASA heliophysics research
Scientists have been studying the near-Earth environment for the better part of a century, but many mysteries -- like where the energetic particles that pervade the area originate and become energized -- still remain. In a new type of collaborative study, scientists combined data from 16 separate NASA and Los Alamos National Laboratory spacecraft to understand how a particle phenomenon in the magnetic environment around Earth occurs. These events, called substorms, can cause auroras, disrupt GPS communications and, at their most intense, damage power grids. (2017-11-27)

Critical Materials Institute develops new acid-free magnet recycling process
A new rare-earth magnet recycling process developed by researchers at the Critical Materials Institute dissolves magnets in an acid-free solution and recovers high purity rare earth elements. (2017-09-07)

Why are there different 'flavors' of iron around the Solar System?
New work from Carnegie's Stephen Elardo and Anat Shahar shows that interactions between iron and nickel under the extreme pressures and temperatures similar to a planetary interior can help scientists understand the period in our Solar System's youth when planets were forming and their cores were created. (2017-02-20)

Parts of the Earth's original crust remain in place today
Analysis of rock samples harvested from the Canadian Shield suggests the samples contain components of Earth's crust that existed more than 4.2 billion year ago. (2017-03-16)

Mars' surface water: We finally know what happened--SFU study
An international study co-led by SFU researcher Brendan Dyck has revealed that the sun may not have evaporated away all of Mars' surface water after all. (2017-12-21)

Changes in Earth's crust caused oxygen to fill the atmosphere
New research out of the University of B.C. has uncovered a direct link between changes in the earth's crust three billion years ago and the introduction of free oxygen to the atmosphere. Without these changes, oxygen could have been suppressed in earth's crust forever, so the findings help explain the emergence of life on our planet. (2017-09-18)

Nearby supernova ashes continue to rain on Earth
Traces of 60Fe detected in space indicate that a nearby supernova occurred within the last few million years. The iron isotope 60Fe, which is very rare, is created when a massive star collapses in the form of supernova. (2016-04-21)

Eclipse season starts for NASA's SDO
On Sunday, Feb. 11, 2018, NASA's Solar Dynamics Observatory, or SDO, saw a total solar eclipse in space when Earth crossed its view of the sun. (2018-02-13)

Life in world's driest desert seen as sign of potential life on Mars
For the first time, researchers have seen life rebounding in the world's driest desert, demonstrating that it could also be lurking in the soils of Mars. (2018-02-26)

Greenhouse gas effect consistent over 420 million years
New calculations show that sensitivity of Earth's climate to changes in the greenhouse gas carbon dioxide (CO2) has been consistent for the last 420 million years, according to an article in Nature by geologists at Yale and Wesleyan Universities. The study confirms that in the Earth's past 420 million years, each doubling of atmospheric CO2 translates to an average global temperature increase of about 3° Celsius, or 5° Fahrenheit. (2007-03-28)

Geoscientists suggest 'snowball Earth' resulted from plate tectonics
About 700 million years ago, the Earth experienced unusual episodes of global cooling that geologists refer to as 'Snowball Earth.' In a new study published in the April issue of the journal Terra Nova, two geologists at The University of Texas at Dallas and UT Austin suggest that those major climate changes can be linked to one thing: the advent of plate tectonics. (2018-05-07)

Extinction by asteroid a rarity
Results presented at 2008 Joint Annual Meeting argue in favor of a (2008-10-06)

Ancient asteroid impact exposes the moon's interior
A large basin on the moon has revealed that its interior is made of a different mineral than Earth's interior, contradicting the theory that the interior of the planets look mostly the same. (2017-10-10)

UTA study sheds new light on evolution
Research from the University of Texas at Arlington and the Wadia Institute of Himalayan Geology suggests that hydrogen, oxygen, water and carbon dioxide are being generated in the earth's mantle hundreds of kilometers below the earth's surface. (2017-10-03)

We need one global network of 1000 stations to build an Earth observatory
Professor Markku Kulmala calls for a continuous, comprehensive monitoring of interactions between the planet's surface and atmosphere in his article 'Build a global Earth observatory' published in Nature, Jan. 4, 2018. (2018-01-04)

May the forest be with you: GEDI moves toward launch to space station
GEDI (pronounced like 'Jedi,' of Star Wars fame) is a first-of-its-kind laser instrument designed to map the world's forests in 3-D from space. These measurements will help fill in critical gaps in scientists' understanding of how much carbon is stored in the world's forests, the potential for ecosystems to absorb rising concentrations of carbon dioxide in Earth's atmosphere, and the impact of forest changes on biodiversity. (2018-05-04)

A new Goldilocks for habitable planets
The search for habitable, alien worlds needs to make room for a second 'Goldilocks,' according to a Yale University researcher. A new study, appearing in the journal Science Advances on Aug. 19, suggests that simply being in the habitable zone isn't sufficient to support life. A planet also must start with an internal temperature that is just right. (2016-08-19)

UH research finds evidence of 2 billion years of volcanic activity on Mars
Analysis of a Martian meteorite found in Africa in 2012 has uncovered evidence of at least 2 billion years of volcanic activity on Mars. This confirms that some of the longest-lived volcanoes in the solar system may be found on the Red Planet. (2017-02-01)

NASA's MAVEN reveals Mars has metal in its atmosphere
Mars has electrically charged metal atoms (ions) high in its atmosphere, according to new results from NASA's MAVEN spacecraft. The metal ions can reveal previously invisible activity in the mysterious electrically charged upper atmosphere (ionosphere) of Mars. (2017-04-10)

First direct observations of methane's increasing greenhouse effect at the Earth's surface
Scientists have directly measured the increasing greenhouse effect of methane at the Earth's surface for the first time. A research team from the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) tracked a rise in the warming effect of methane - one of the most important greenhouse gases for the Earth's atmosphere - over a 10-year period at a DOE field observation site in northern Oklahoma. (2018-04-02)

New study sheds light on Moon's slow retreat from frozen Earth
A study led by University of Colorado Boulder researchers provides new insight into the Moon's excessive equatorial bulge, a feature that solidified in place over four billion years ago as the Moon gradually distanced itself from the Earth. (2018-02-06)

A new 'atmospheric disequilibrium' could help detect life on other planets
A new study has found a simple approach to look for life that might be more promising than just looking for oxygen. (2018-01-24)

Experts explain origins of topographic relief on Earth, Mars and Titan
The surfaces of Earth, Mars, and Titan, Saturn's largest moon, have all been scoured by rivers. Yet despite this similarity and the amazingly Earth-like landscapes of Titan complete with valleys, lakes, and mountains, researchers led by City College of New York geologist Benjamin Black report new evidence that the origins of the topography there and on Mars are different from on Earth. (2017-05-19)

Study opens new questions on how the atmosphere and oceans formed
A new study led by The Australian National University has found seawater cycles throughout the Earth's interior down to 2,900km, much deeper than previously thought, reopening questions about how the atmosphere and oceans formed. (2017-02-27)

Oldest evaporite deposit to date provides unique look into early Earth's atmosphere
An analysis of salt mineral sediments, or evaporites, from the oldest deposit of this type discovered to date provides a unique window on the atmospheric conditions of early Earth following the Great Oxidation Event 2.3 billion years ago. (2018-03-22)

Jelawat not seen as a threat to the Philippines
Tropical Depression Jelawat, a newly formed tropical cyclone over Western Micronesia is expected to strengthen into a Tropical Storm and enter the southeastern border of the Philippines by this afternoon (March 26). (2018-03-26)

Snapshot of past climate reveals no ice in Antarctica millions of years ago
A snapshot of New Zealand's climate 40 million years ago reveals a greenhouse Earth, with warmer seas and little or no ice in Antarctica. A new study led by Cardiff University suggests Antarctica at that time was yet to develop extensive ice sheets. (2008-07-28)

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