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Comet Discovery reopens debate on the origin of the earth's water

Comet 46P / Wirtanen on January 3, 2019. © Nicolas Biver Where did the Earth's water come from? Although comets with their ice-chain nuclei act as ideal candidates, analyzes so far have shown that their water differs from that in our oceans. Now, however, there is an international team bringing together researchers from the CNRS at the Radiation and Radiation …

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Melting small glaciers could add 10 inches to sea levels

The Kennicott Glacier flows out of the Wrangell Mountains in Alaska. Credit: Regine Hock              A new review of glacier research data paints a picture of a future planet with a lot less water and a lot more water. Glaciers worldwide are projected to lose anywhere from 18% to 36% or their mass at 2100, resulting in almost 10 inches …

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Seeing Red in Fossil Record

What color was T. Rex? What about triceratops or glyptodone? Until recently, the priest's gallery was the only proceeds of daydreams, CGI artists or children with crayons. Advances in imaging technology bring us closer to real answers. Over the last decade, we have learned that Sinosauroptery tail was striped, and Microraptor's head was blue black and shiny like a collar. …

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Chemistry of stars throws new light on Gaia's sausage

Credit: CC0 Public Domain Chemical traces in the atmosphere of stars are used to uncover new information about a galaxy, known as Gaia sausage, which was involved in a major collision with the milky roads billions of years ago. Astrophysicists at Birmingham University in collaboration with colleagues in European institutions in Aarhus, Bologna and Trieste have studied evidence of the …

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Plankton as a climate driver instead of the sun?

Microscopic view on marine plankton. Credit: A. Stuhr, GEOMAR.             Fluctuations in the orbital parameters of the Earth are considered to be the trigger for long-term climatic fluctuations such as ice ages. This includes the variation of the inclination of the Earth's axis with a cycle of about 40,000 years. Kiel-based marine scientists lead by GEOMAR Helmholtz Center for Ocean Research …

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Rare volcanic rocks lift member on dangers of little-studied eruptions

Researchers doing fieldwork at Aluto in East Africa. Credit: Ben Clarke              Unusual rocks discovered on a remote mountainside have alerted scientists to the dangers posed by a little-studied type of volcano.                                                 Researchers say that the rocks, found in East Africa, provide vital clues into the hazards associated with active volcanoes elsewhere. The volcanic remnants from Aluto in Ethiopia …

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Head of NOAA says 5G deployment could set weather forecasts back 40 years. The wireless industry denies it.

(Angel Garcia / Bloomberg News) What, apparently, decades of progress in weather prediction was reversed and monster storms that we currently see coming for days were no longer foreseeable? The toll on life, property and the economy would be enormous. Yet the government's science agencies say such a loss in the accuracy could happen if the Federal Communications Commission and …

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Large energy savings for small machines

Simon Fraser University's physics graduate student Steven Large, left, and Professor David Sivak model the folded and unfolded states of a DNA hairpin. Credit: SFU Inside all of us are trillions of small molecular nanomachines that perform a variety of tasks necessary to keep us alive. In a groundbreaking study, a team led by SFU physics professor David Sivak demonstrated …

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