Assembly formed by primordial peptides as observed by bright field microscopy. Credit: frenkel-pininter laboratory A new study from the Hebrew University of Jerusalem published in the Proceedings of the National Academy of Sciences sheds light on one of life’s greatest mysteries: why biology is based on a very specific set of amino acids and, in…
During millennia, astronomers thought Uranus was nothing more than a distant star. It was not until the end of the 18th century that Uranus was universally accepted as a planet. To this day, the world ringed and blue subverts the expectations of scientists, but NASA’s new research helps to disconnect part of the mystique of…
Decimetric broadband radio explosions have been observed (with frequencies from hundreds of MHz to a few GHz) from the sun and other flame stars. In the solar case, such explosions have been classified as decimetric explosions of type IV (T-IVDM). Its spectra often contain substantial fine structures, such as pulsations, peaks and various absorption structures….
Fast facts Where is? Grand Erg Oriental, Sahara [30.13306820, 9.306920931] What is in the photo? The marking contrast where a “Star dunes” field meets Rocky Hills What satellite took the photo? Camera Earthkam, aboard the International Space Station When was it taken? October 31, 2017 This surprising satellite image shows the marked difference between a…
Trained as an economist, Pulkit Bajpai has spent his career working with local governments around the world in search of small initiatives that can add broader progress for the adaptation and financing of climate change. Now, Bajpai hopes to combine this experience in climate economy and data science with new courses as a student at…
Press in or click to see the image in full size This image of a region inside the Jezero de Marte crater, known as Cheyava Falls, was taken with the Mastcam-Z Chamber of Perseverance of NASA. The drilling well, on the left, shows where a sample was collected on July 21, 2024, while the image…
The Vouched, The Unaveuched and Digital Phantom: Four Spiders (Araneae) published for, but not happening, Ireland Abstract The Gnaphosid Zelotes Subterraneus spider (CL Koch, 1833) is formally eliminated from the Irish list. The names of three species of spiders recently published for Ireland would constitute the first Irish records; However, no coupons were collected. Therefore,…
When modern humans arrived in Western Europe, they took their love for projectiles along with them. That is what a new analysis in the Proceedings of the National Academy of Sciences It seems to suggest, after identifying the oldest shell workshop throughout Western Europe, in an archaeological site in Saint-Césaire, France. Splicing shells and color…
He Atacama desert It is an access point for astronomy. With its dry air and lack of light pollution, it is a perfect place for some of the world’s largest and most precise telescopes. Several of these telescopes They are on mountains like Cerro Pachón and Cerro Tololo where the altitude allows darker skies and…
Prey animals can use their colors to hide from predators or dissuade them from attacking. But local conditions determine which option works best. A global study comparing defensive coloration in insects reveals that camouflage and warning colors each excel under certain environmental conditions. The findings, published September 25 in Science, identify fundamental factors that may…