César Tomé is the editor of Mapping Ignorance.
Cells in upper airway may trigger coughs to block water When a drink goes down the wrong way or reflux gurgles up, neuroendocrine cells in the upper airway set off coughing or other reflexes by telling the nervous system to expel the water or acid. Full Story: Live Science Sinking cities put millions of people […]
Condensed matter • Nanotechnology • Particle physics • Physics
Superconductors can carry large electrical currents without any resistance. One situation where they don’t carry currents without resistance is when there is too much current. By designing microscopic electronic components made from very thin superconductors, researchers can use this effect to create a switch, like a transistor. Nanowire superconducting switching devices (called nanocryotrons, or nTrons […]
Blind quantum computing promises widespread access A breakthrough method to securely connect a quantum computing server to an independent computer over existing fiber optic networks could allow home or office computers to access quantum computing through the cloud,. The method dubbed blind quantum computing uses unique combinations of quantum memory and photons to ensure data […]
Fossils of 2 new mammal species clarify evolution’s path Teeth, ears and jaws of two newly identified mammal species could help scientists understand mammals’ evolution from crocodilians, dinosaurs and lizards. Specimens of Feredocodon chowi, mouse-size members of the family shuotheriids from the Jurassic period, have molars more like reptiles than modern mammals, and the middle […]
Scientists sketch face of 1,500-year-old Chinese emperor DNA analysis, an almost complete skull and open-source software have enabled scientists to reconstruct the face of Emperor Wu, who ruled China’s Northern Zhou dynasty around 1,500 years ago and whose remains were found in 1996. Scientists have extracted more than a million single-nucleotide polymorphisms, or differences in […]
Complementary metal–oxide–semiconductor (CMOS) is a type of metal–oxide–semiconductor field-effect transistor (MOSFET) fabrication process that uses complementary and symmetrical pairs of p-type and n-type MOSFETs for logic functions. CMOS technology is used for constructing integrated circuit chips, including microprocessors, microcontrollers, memory chips, and other digital logic circuits. After 50 years of continuous transistor size downscaling and […]
Human migration received help from Toba eruption A study on an archaeological site in Ethiopia has added to evidence that indicates the eruption of Mount Toba in Indonesia 74,000 years ago might not have been apocalyptic. The study shows humans adjusted to arid conditions after the eruption in a way that might have aided migration […]
Tantalum is one of the rarest elements and has multiple stable isotopes. The least abundant tantalum isotope, Ta-180 is found naturally in a long-lived excited state, a feature unique to this isotope. In excited states, a nuclei’s protons or neutrons have higher than normal energy levels. Although energetically possible, the radioactive decay of this excited […]
Europe’s heat waves may start with Arctic melting Meltwater from Arctic ice could be setting off recent hot, dry summers in Europe by changing ocean currents and air circulation. A resulting “cold blob” of water in the North Atlantic Ocean could intensify European winter storms and their westerly winds, creating a barrier of warm ocean […]
When you are trying to solve one of the biggest conundrums in cosmology, you should triple check your homework. The puzzle, called the “Hubble Tension,” is that the current rate of the expansion of the universe is faster than what astronomers expect it to be, based on the universe’s initial conditions and our present understanding […]