Digging into the molecules of fossilized dinosaur eggshells
Dinosaurs roamed the Earth more than 65 million years ago, and paleontologists and amateur fossil hunters are still unearthing traces of them today. The minerals in fossilized eggs and shell fragments provide snapshots into these creatures' early liv.....»»
Combining extreme-ultraviolet light sources to resolve a quantum mechanical dissociation mechanism in oxygen molecules
For the first time, researchers have succeeded in selectively exciting a molecule using a combination of two extreme-ultraviolet light sources and causing the molecule to dissociate while tracking it over time. This is another step towards specific q.....»»
An effective approach for preparing supramolecular polymers at high concentration
Supramolecular polymers (SPs) are molecular assemblies composed of non-covalently bonded small molecules. They show high recyclability originating from their dynamic nature of monomer binding, which is different from covalent polymers with non-biodeg.....»»
Study looks at RNA"s solo act on the ever-changing stage of cellular dynamics
RNA has been in the limelight for its starring role in cutting-edge vaccine technology, but RNA molecules are also key players in the inner workings of cells......»»
Researchers boost vaccines and immunotherapies with machine learning to drive more effective treatments
Small molecules called immunomodulators can help create more effective vaccines and stronger immunotherapies to treat cancer......»»
Pok Pok Montessori-inspired iOS app gets Dinosaur toy following App of the Year nomination
A brand new Dinosaur toy has arrived today as a major update for the wonderful Montessori-inspired iOS app Pok Pok. The new hands-on prehistoric experience encourages kids’ growth with role play, cause and effect, collecting, problem-solving, patie.....»»
Researchers tune the speed of chirality switching
Chiral molecules can have dramatically different functional properties while sharing identical chemical formulae and almost identical structures. The molecular structure of two types of a chiral molecule—so-called enantiomers—are mirror images of.....»»
Late Prehistoric discovery turns archaeological assumptions on their head
For a team of archaeologists digging in southwest Spain, the discovery of a Bronze/Iron Age stela—a funerary stone slab with carvings depicting an important individual—would have been exciting enough. But to find a stela that challenges longstand.....»»
Feathery moa"s fossilized footprints, ancient age revealed
Cosmogenic nuclide dating, a method commonly used in dating coastal areas and alluvial riverbeds for landscape reconstruction, is also useful for calculating the age of trace fossils, such as a footprint, where no remains of the animal are preserved......»»
Recent fossil discovery suggests the first dinosaur egg was leathery
The discovery of several exceptionally preserved reproduction-related dinosaur specimens over the last three decades has improved our knowledge of dinosaur reproductive biology. Nevertheless, due to limited fossil evidence and a lack of quantitative.....»»
CT scan reveals "neglected" dinosaur had super senses
A CT scan of an often-overlooked, plant-eating dinosaur's skull reveals that while it may not have been all that "brainy," it had a unique combination of traits associated with living animals that spend at least part of their time underground, includ.....»»
A new trail to exoplanets: Team successfully detects ammonia isotopologues in atmosphere of cold brown dwarf
They reveal the origin of wine, the age of bones and fossils, and they serve as diagnostic tools in medicine. Isotopes and isotopologues—molecules that differ only in the composition of their isotopes—also play an increasingly important role in a.....»»
New "little bitty" dinosaur discovered in North Texas
Scientists from the Perot Museum of Nature and Science recently named a newly discovered species of a plant-eating dinosaur, suggesting the animal once used to roam eastern North America more than 96 million years ago......»»
Moroccan archaeologists unearth new ruins at Chellah, a tourism-friendly ancient port near Rabat
Archaeologists have unearthed more ancient ruins of what they believe was once a bustling port city near the capital of modern-day Morocco, digging out thermal baths and working class neighborhoods that the country hopes will lure tourists and schola.....»»
Experiments show molecules, not substrates, are mostly responsible for chirality-induced spin selectivity
A team of chemists at Northwestern University, working with a pair of colleagues from Università di Parma, reports that the chirality-induced spin selectivity (CISS) effect is caused by the molecules involved, not a substrate, when quantum spin is t.....»»
Simulating space to explore the great mystery of interstellar chemistry
The universe is more than 13 billion years old and space is often depicted as a vast, empty vacuum. Other than planets and stars, there's nothing there, right? Actually, space is littered with complex, carbon-based molecules. However, the range of mo.....»»
Video: An antidote for deadly mushrooms?
Almost all mushroom-related fatalities worldwide are caused by a single group of molecules, cyclopeptides, which are found in death caps and destroying angels......»»
Fossilized bat skull adds vital piece to evolution puzzle
Of all the mammals, bats have one of the poorest fossil records, with paleontologists estimating that about 80% of it is missing......»»
Structure-destabilizing mutations transform Bcl-2 from an antiapoptotic protein into a proapoptotic protein
Bcl-2 family proteins are highly conserved molecules that play a crucial role in regulating the release of apoptotic proteins from mitochondria. They possess Bcl-2 homology (BH) domains, which are characterized by both sequence and structural similar.....»»
New observations confirm important step in star formation
New observations have confirmed a key step in the process of star formation: a rotating "cosmic wind" made of molecules, which is vitally important for collapsing gas clouds to contract sufficiently so as to form a hot, dense young star......»»
Manipulating collective motions of electrons and solvent molecules in a polar liquid
Researchers at the Max-Born-Institute have now mapped the linear and nonlinear optical polaron response using ultrafast two-dimensional spectroscopy in the THz frequency range. As they discuss in the current issue of Physical Review Letters, multi-ph.....»»