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The new composite images from the NASA/ESA Hubble Space Telescope reveal the dual nature of the giant star AG Carinae. This Hubble image shows a giant star called AG Carinae. The color image was made from separate exposures taken in the visible region of the spectrum with Hubble’s Wide Field Planetary Camera 2 (WFPC2) and Wide Field Camera 3 (WFC3). It is based on data obtained through two filters....

Perseverance’s first cored-rock sample from Jezero Crater, Mars, is now enclosed in an airtight titanium sample tube, making it available for retrieval in the future, according to members of the Perseverance team at NASA’s Jet Propulsion Laboratory. Through the Mars Sample Return campaign, NASA researchers and their colleagues from ESA are planning a series of missions to return the Perseverance’s...

Archaeologists have examined a large assemblage of 45,000-year-old stone tools and by-products of tool-making process from the site of Heidenschmiede in the Swabian Jura, southwestern Germany. Middle Paleolithic stone core from the site of Heidenschmiede, Germany. Image credit: Jens A. Frick. Heidenschmiede is a rockshelter, just below the castle of Hellenstein in the city of Heidenheim at the Brenz...ColourTree Customized Size Fence Screen Privacy Screen Green 4'

Paleontologists have described in detail for the first time the scaly skin of Carnotaurus sastrei, an abelisaurid theropod that lived in South America during the Late Cretaceous epoch, sometime between 72 and 70 million years ago. An artist’s reconstruction of Carnotaurus sastrei based on the scaly skin described by Hendrickx & Bell. Image credit: Jake Baardse. The newly-described fossil of...

Chromatin is a substance within a chromosome consisting of DNA and protein. The major proteins in chromatin are histones, which help package the DNA in a compact form that fits in the cell nucleus. New research from the Weizmann Institute of Science has revealed a previously unknown mode of nuclear chromatin organization in fully differentiated cells in which chromatin density is high at the nuclear...

Physicists from the Department of Health Science and Technology in the Institute of Food Nutrition and Health at the ETH Zürich have applied the science of rheology to the seemingly quaint purpose of improving the quality of a cup of black tea. Black tea brewed in tap water; whereas tea can visibly generate a film where it interfaces with air, its more acidic counterpart, coffee cannot. Image credit:...Glass Dining Table with Storage Shelf, 2-Tier Kitchen Table for

A new study in mice provides insights into the use of green tea and cocoa flavonoids as nutritional interventions for the treatment of aging-related neuromuscular alterations that occur with sarcopenia, the progressive loss of skeletal muscle mass and function with age. Cocoa and green tea flavonoids may be beneficial in the nutritional management of age-related deterioration of the neuromuscular...

Scientists have decoded the genome of the shea tree (Vitellaria paradoxa), a unique agroforestry tree species central to sustaining local livelihoods and the farming environments of rural communities across Africa’s Sudano-Sahelian agroclimactic belt. Shea trees, the source for the popular ingredient shea butter, grow in a shea parkland during the lush rainy season near the town of Bole in northern...

Reconstructing the emergence and weathering of Earth’s continental crust in the Archean eon is crucial for our understanding of early ocean chemistry, biosphere evolution and the onset of plate tectonics. An artistic conception of the early Earth. Image credit: Simone Marchi / NASA. Once land becomes established through dynamic processes like plate tectonics, it begins to weather and add crucial...Garland Rug Silhouette Area Rug, 8 by 10-Inch, Teal/Ivory

The new reconfigurable memristor, or an electronic memory device, is based on a molecular system that can transition between on and off states at several discrete sequential voltages, according to a paper published in the journal Nature. Profuse dendritic-synaptic interconnections among neurons in the neocortex embed intricate logic structures enabling sophisticated decision-making that vastly outperforms...