The black holes at the centres of galaxies are the most mysterious objects in the Universe, not only because of the huge quantities of material within them, millions of times the mass of the Sun, but because of the incredibly dense concentration of matter in a volume no bigger thanContinuar Leyendo
On Aug. 26, 2020, NASA’s Fermi Gamma-ray Space Telescope detected a pulse of high-energy radiation that had been racing toward Earth for nearly half the present age of the universe. Lasting only about a second, it turned out to be one for the record books — the shortest gamma-ray burstContinuar Leyendo
Relaxing Covid-19 restrictions could pave the way for new vaccine-resistant virus mutations, according to researchers at the University of East Anglia and the Earlham Institute. Norlfok, July 28, 2021.- A new article published today warns against relaxing Covid-19 restrictions prematurely. It describes how we are in an ‘arms race’ withContinuar Leyendo
A new MIT study of how a mammalian brain remembers what it sees shows that while individual images are stored in the visual cortex, the ability to recognize a sequence of sights critically depends on guidance from the hippocampus, a deeper structure strongly associated with memory but shrouded in mysteryContinuar Leyendo
París, July 27, 2021.- Jupiter’s moon Ganymede is the largest moon — and the ninth-largest object — in the Solar System. It may hold more water than all of Earth’s oceans, but temperatures there are so cold that water on the surface freezes and the ocean lies roughly 160 kilometresContinuar Leyendo
The rapid spread of the Alpha variant of COVID-19 resulted from biological changes in the virus and was enhanced by large numbers of infected people ‘exporting’ the variant to multiple parts of the UK, in what the researchers call a ‘super-seeding’ event. Oxford, UK, July 26, 2021.- Results of theContinuar Leyendo
Scientists have identified five new plant species in the Bolivian Andes. Exeter, Devon, UK, July 26, 2021.- The species are all part of the genus Jacquemontia, which are twining or trailing plants with pretty blue flowers. With rapid biodiversity loss taking place across South America and worldwide, identifying plant speciesContinuar Leyendo
There are many reasons that an intranasal vaccine against the SARS-CoV-2 virus would be helpful in the fight against COVID-19 infections, University of Alabama at Birmingham immunologists Fran Lund, Ph.D., and Troy Randall, Ph.D., write in a viewpoint article in the journal Science. Birmingham, July 24, 2021.- That route ofContinuar Leyendo
University of Virginia School of Medicine researchers have discovered a previously unknown repair process in the brain that they hope could be harnessed and enhanced to treat seizure-related brain injuries. Charlottesville, VA, July 24, 2021.- Common seizure-preventing drugs do not work for approximately a third of epilepsy patients, so newContinuar Leyendo
There are many reasons that an intranasal vaccine against the SARS-CoV-2 virus would be helpful in the fight against COVID-19 infections, University of Alabama at Birmingham immunologists Fran Lund, Ph.D., and Troy Randall, Ph.D., write in a viewpoint article in the journal Science. Birmingham, AL, July 24, 2021.- The routeContinuar Leyendo
