Supernovas are amazingly bright explosions of massive stars at the end of their lives. During the gravitational collapse, the outer layers of the star are pushed away, and chemical elements formed inside the dying star are released into space. This cosmic dust rains down onto the Earth continuously, eventually becoming part of sediments deposited in the sea.
Research published in the journal Physical Review Lettersused the concentrations of elements formed in an exploding star and preserved in oceanic sediments to hypothesize that a supernova exploded near Earth just 2.5 million years ago.
The authors, led by Dr. Gunther Korschinek from the Technical University of Munich, focused their study on ferromanganese crusts
COVID-19 is now the third leading cause of death in the United States only behind cardiovascular disease and cancer. The U.S. accounts for more than 20 percent of COVID-19 cases (more than 7.7 million) and deaths (more than 210,000) in the world today while comprising 4.25 percent of the global population.
In a commentary published online in EClinicalMedicine, researchers from Florida Atlantic University’s Schmidt College of Medicine and collaborators state that “pandemic politics” is causing assaults on science, the U.S. Food and Drug Administration (FDA), the U.S. Centers for Disease Control and Prevention (CDC) as well as the health of the public.
As an example, the authors point out that the FDA, a world renowned regulatory authority issued an Emergency Use Authorization (EUA) for hydroxychloroquine in the absence of any reliable data from large-scale randomized trials, all of which later showed no benefit and some
Researchers have made a breakthrough genetic discovery into the cause of a spectrum of severe neurological conditions.
A research study, led by the Murdoch Children’s Research Institute (MCRI) and gracing the cover of and published in the October edition of Human Mutation, found two new mutations in the KIF1A gene cause rare nerve disorders.
MCRI researcher Dr Simranpreet Kaur said mutations in the KIF1A gene caused ‘traffic jams’ in brain cells, called neurons, triggering a devastating range of progressive brain disorders. KIF1A-Associated Neurological Disorders (KAND) affects about 300 children worldwide.
“KAND symptoms often appear at birth or early childhood, have varying severity and can result in death within five years of life. Because clinical features overlap with other neurological disorders, children can be misdiagnosed or remain undiagnosed for a long period of time,” she said.
“Our study will lead to more diagnoses by expanding the mutation pool further, finding