Diamonds from recycled seabed

Formation from subducted marine sediment accounts for salty inclusions of Bort diamonds Researchers have clarified the origin of so-called Bort diamonds with many saline inclusions. © Parent Géry / Public domain Read out Salty Gems: Researchers have discovered why some diamonds have so many salty inclusions - so far this has been an unresolved mystery.
Read More

The riddle of the rings

Archaeologists ruffle about ring-shaped relics from a Bronze Age fortress Carbureted ring fragments (above) from a Bronze Age fortress in Austria are given to archaeologists Rätel - because these rings are very different than the clay rings shown below. © Heiss et al, 2019 Read out Mysterious Rings: In a hill fortress in Austria, archaeologists have discovered three strange objects from the Bronze Age.
Read More

Earth rotation generates flow in Lake Garda

Evidence of the influence of Coriolis force on circulating currents in smaller lakes For the currents in the long, narrow Gardaseewerden the Coriolis force plays a crucial role. © Hans Hagenaars / CC-by-sa 3.0 Read out Surprising discovery: The Earth's rotation not only affects currents in the ocean, but acts even in relatively small lakes such as Lake Garda in Italy, as a study revealed.
Read More

Oldest early man stone tools discovered

Archologists discover almost 2.6 million years old stone slopes of the Oldowan technique These stone blades are almost 2.6 million years old - they represent the oldest known stone tools of the early human Oldowan technology. © David R. Brown Read out Prehistoric technology leap: Already 2.6 million years ago, our ancestors produced tools through the targeted knocking off of stone blades.
Read More

Do sediments keep plate tectonics going?

Plate boundary deposits could act as a lubricant for continental drift So far, coat convection has been the main engine of plate tectonics. But also sediments could be important driving forces of continental drift, as geologists report. © Christoph Burgstedt / iStock Read out Lubricants of the earth plates: Researchers could have identified a previously overlooked driving force of plate tectonics - erosion.
Read More

20,000 years old seawater discovered

Lime water preserved in limestone proves to be a relic of the last ice age Ice Age Ocean Relic: Clara Blättler of the University of Chicago with a 20, 000-year-old water sample taken from a drill core. © Jean Lachat Read out Aqueous Time Capsule: Researchers discovered seawater from the last ice age off the coast of the Maldives.
Read More

Comoros: Enormous underwater outbreak

Eruption was created 800 meters high underwater volcano off the island of Mayotte Sonar image of the newly formed submarine volcano (red) in front of the Comoros island of Mayotte and the gas streams rising from it. © MAYOBS team (CNRS / IPGP-Université de Paris / Ifremer / BRGM) Read out Hidden Eruption: One of the largest known underwater volcanic eruptions could have taken place off the coast of the Comoros island of Mayotte - and still continues.
Read More

Pacific makes climate forecasts uncertain

Climate fluctuations in the tropical Pacific make forecasts more difficult Measuring buoy in the tropical Pacific: The observation data from this region are in many areas only patchy. © NOAA / PMEL Read out Big uncertainty factor: The tropical Pacific is responsible for the fact that climate forecasts for the next decades still show a relatively high level of uncertainty.
Read More

Volcanoes: landslide as collapse forerunner?

Slow skidding movements could indicate impending catastrophes 3D visualization of Ritter Island and the surrounding seabed with the traces of the landslide of 1888. © Jens Karstens / GEOMAR Read out Subtle harbingers: The flanks of many island volcanoes like those of Mount Etna slide very slowly towards the sea - this could already be signs of impending catastrophe.
Read More

Solved puzzles about arctic sea ice

Simulations reveal the cause of annual fluctuations in the size of the ice surface The extent of Arctic sea ice continues to decline as a result of climate change - but it is also subject to strong annual fluctuations. © D. Olonscheck Read out Noticeable variations: Researchers have discovered why the area of ​​the Arctic sea ice varies greatly from year to year. Unl
Read More

Is China freeing banned ozone killers?

Researchers locate the major source of increasing trichlorofluoromethane emissions The propellant trichlorofluoromethane is considered a bad ozone killer. © HG: NASA Read out Illegal emissions: China seems to be using a banned CFC propellant on a large scale. Measurements show that significant amounts of the "ozone killer" trichlorofluoromethane reach the atmosphere in the east of the country.
Read More

Free flowing rivers are scarce

Only one-third of the world's major rivers flow unhindered from the source to the mouth There are hardly any rivers in the world that flow unhindered from the source to the estuary without dams or barrages - here is a view over the Rio de Coco and Rio Araguaia in Brazil © Day's Edge Productions / WW Read out Corded Lungs: Two-thirds of all rivers in the world are no longer flowing freely in their beds, as revealed by the first global mapping to the state of free-flowing rivers.
Read More

North Sea: Search for the sunken land

Research expedition searches for Stone Age settlement traces in Doggerland Between England and the mainland stretched in the ice age a wide land area - Doggerland. Now researchers are looking in part of this old land bridge for traces of Stone Age settlements. © NASA Read out Sunken land bridge: 10, 000 years ago, the Doggerland united Britain with the continent - until the rising North Sea level caused these vast tracts of land to sink.
Read More

Europe: air pollution already in antiquity

Mining of the Romans increased lead pollution of the air tenfold Two ice cores from the summit of Mont Blanc prove that the air over Eurropa was contaminated with lead and antimony even in Roman times. © Björn S. / CC-by-sa 2.0 Read out Mining with consequences: Even back in Roman times the air over Europe was polluted with lead and other heavy metals.
Read More

El Ninos have moved

Climate phenomenon is becoming more intense in the Eastern Pacific, more frequent in the Central Pacific State of emergency in the Pacific: ocean warming in the strong East Pacific El Nino of 1997. These events have become more intense over the last 30 years. © NASA Read out Clear shift: Over the past 30 years, the nature and strength of the Pacific climate phenomenon El Nino has changed significantly, as revealed by a long-term comparison.
Read More

But no proof for King David?

Alleged mention of the "house of David" could be a misinterpretation On the Moabitic Mesha stela (left) the word "House of David" should be mentioned in line 31, but there the letters are damaged. © historical Read out Balak instead of David? One of the few references to the real existence of the biblical King David could now turn out to be wrong.
Read More

Solved the mystery of the mega-eruption

29, 000 years ago, an outbreak of Campi Flegrei covered half of Europe with ashes Crater, lava strata and gas leaks: View of the phlegraean fields from orbit - a hidden super volcano near Naples. © NASA Read out Dangerous latent threat: Campi Flegrei, the super-volcano near Naples, is active - and seems to cause more eruptions than previously thought.
Read More

Poison collects gold

R tsel solves the emergence of the second largest gold deposit in the world The second largest gold deposit in the world hides the precious metal in the pyrite. How it got there, researchers have now enlightened. © C. Kusebauch / GFZ Read out Arsenic is the key: researchers have discovered how the world's second-largest gold deposit came to be - the Carlin deposits in the US.
Read More

The biggest ice shelf on earth melts

Sun-warm surface water gnaws at the Antarctic Ross Ice Shelf The several hundred meters thick Ross Ice Shelf was previously considered to be largely stable, but this is deceptive, as now reveal measurements. © NOAA / Michael Van Woert Read out Ice wastage: The largest ice shelf on earth melts stronger than previously thought.
Read More

Light Phenomenon STEVE: solved the puzzle?

The reddish arc is apparently not an aurora, but its biggest companion A narrow reddish arc rising high into the sky - that is typical of the unusual luminous phenomenon STEVE. © NASA / GSFC Read out Mysterious Sky Lights: So far, it was unclear how the aurora phenomenon "STEVE" arises, but now researchers could have solved the mystery.
Read More