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News articles about "Isotope"

Diet likely changed game for some hominids 3.5 million years ago

Carbon, carbon
A new look at the diets of ancient African hominids shows a game changer occurred about 3.5 million years ago when some members added grasses or sedges to their menus according to a new study ... - Read More

Acceleration of ocean denitrification during deglaciation documented

As ice sheets melted during the deglaciation of the last ice age and global oceans warmed oceanic oxygen levels decreased and denitrification accelerated by 30 to 120 percent a new international study shows creating oxygen ... - Read More

Rainforests take the heat, paleontologists show

Heat
South American rainforests thrived during three extreme global warming events in the past say paleontologists at the Smithsonian Tropical Research Institute in a new report published in the Annual Review of Earth and Planetary Science ... - Read More

Geochemist aids development of geologic time scale for study of Earth's history

Time
A Boise State University researcher has taken a lead role in developing the most current timetable on Earth's geologic history Geochemist Mark Schmitz is one of four editors on The Geologic Time Scale 2012 or ... - Read More

Flawed diamonds promise sensory perfection: Electron spin extended for incredibly tiny magnetic detectors

Electron, Electron, Electron
From brain to heart to stomach the bodies of humans and animals generate weak magnetic fields that a supersensitive detector could use to pinpoint illnesses trace drugs and maybe even read minds Sensors no bigger ... - Read More

Unique Chemistry Reveals Eruption of Ancient Materials Once at Earth's Surface

was subducted into the mantle more than 2.5 billion years ago and recycled into the mantle source of the Mangaia lavas ” said Rita Cabral the study’s primary author and a graduate student in Boston ... - Read More

Rethinking early atmospheric oxygen: Possibility of more dynamic biological oxygen cycle on early Earth than previously supposed

Oxygen, Oxygen, oxygen
A research team of biogeochemists at the University of California Riverside has provided a new view on the relationship between the earliest accumulation of oxygen in the atmosphere arguably the most important biological event in ... - Read More

Unique sulfur isotopes in plume lavas reveal deep mantle storage of archean crust

was subducted into the mantle more than 2.5 billion years ago and recycled into the mantle source of the Mangaia lavas ” says Rita Cabral the study’s primary author and a graduate student in BU’s ... - Read More

Unique Sulfur Isotopes in Plume Lavas Reveal Deep Mantle Storage of Archean Crust

Founded in 1839 Boston University is an internationally recognized private research university with more than 30 000 students participating in undergraduate graduate and professional programs As Boston University’s largest academic division the College and Graduate ... - Read More

Geochemical method finds links between terrestrial climate and atmospheric carbon dioxide

Atmospheric
Nearly 34 million years ago   Earth underwent a transformation from a warm high carbon dioxide greenhouse state to a lower CO2 variable climate similar to the modern icehouse world Massive ice sheets grew across ... - Read More

Rapid climate change and the role of the Southern Ocean

Ocean, Climate change, Climate change, Climate, Ocean, climate
Scientists from Cardiff University and the University of Barcelona have discovered new clues about past rapid climate change Share This See Also Global Warming Oceanography Climate Earth Science Geography Geochemistry Carbon cycle Ocean acidification Phytoplankton ... - Read More

Egyptian Wedding Certificate Key to Authenticating Controversial Biblical Text

from Augusta Honduras Now a major heritage site Augusta was founded as an English stronghold on Roatan Island from 1742 1748 and hosted a mix of English militia and indigenous Miskitu While historical documents provide ... - Read More

Chemistry: Elusive mechanism of widely used click reaction revealed

Scientists at The Scripps Research Institute TSRI have illuminated the mechanism at the heart of one of the most useful processes in modern chemistry A reaction that is robust and easy to perform it is ... - Read More

Scientists propose alternative method for the study of ions

Scientists at the Department of Physics of the University of Oulu have teamed up with scientists in France Russia and Japan to propose a new experimental method for researching positively charged ions The study In ... - Read More

Researchers find new information about 'Snowball Earth' period

It is rather difficult to imagine but approximately 635 million years ago ice may have covered a vast portion of our planet in an event called Snowball Earth According to the Snowball Earth hypothesis the ... - Read More

Trackable drug-filled nanoparticles: Potential weapon against cancer

Tiny particles filled with a drug could be a new tool for treating cancer in the future A new study published by Swedish scientists in Particle & amp Particle Systems Characterization shows how such nanoparticles ... - Read More

Neutron scattering provides data on ion adsorption

Scattering
The adsorption of ions in microporous materials governs the operation of technologies as diverse as water desalination energy storage sensing and mechanical actuation Until now however researchers attempting to improve the performance of these technologies ... - Read More

Security: Explosive breakthrough in research on molecular recognition

Ever wonder how sometimes people still get through security with explosives on their person Research done in the University of Alberta's Department of Chemical and Materials Engineering has revealed a new way to better detect ... - Read More

Isotope patterns in ancient volcanic sulfur tell which global cooling episodes were caused by volcanic eruptions

sulfur
Volcanoes are well known for cooling the climate But just how much and when has been a bone of contention among historians glaciologists and archeologists Now a team of atmosphere chemists from the Tokyo Institute ... - Read More

Studying ice cores from West Antarctica for clues as to why the Earth began to emerge from the Ice Age

Ice
A slice of ice from 17 500 years ago can help scientists figure out how Earth came out of the Ice Age and how climate change can happen in the future according to South Dakota ... - Read More
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