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Credit: CC0 Public Domain After studying global data from the novel coronavirus (COVID-19) pandemic, researchers have discovered a strong correlation between severe vitamin D deficiency and mortality rates. Led by Northwestern University, the research team conducted a statistical analysis of data from hospitals and clinics across China, France, Germany, Italy, Iran, South Korea, Spain, Switzerland,…

A new study has sparked fears that the coronavirus has mutated to become more contagious, but experts say there is no evidence these changes make it any more dangerous or transmissible than it already is."Viruses mutate all the time, [and] most mutations have no significance even if they spread," said Adriana Heguy, director of the…

Media playback is unsupported on your device Media captionUS Vice-President Mike Pence appears without virus mask at hospital US Vice-President Mike Pence has visited a top US hospital without wearing a mask, despite the medical centre's own rules that visitors should wear personal protective equipment.Mr Pence appeared to be the only person present without a…

Conservative Twitter feeds and websites exploded with mirth Tuesday when Joe Biden appeared to fall asleep during a virtual town hall meeting with Hillary Clinton. The livestreamed event was designed to highlight Mrs. Clinton’s endorsement of Mr. Biden, the presumptive Democratic presidential nominee. During the event, Mr. Biden frequently cast his gaze down as if…

Former Vice President Joe Biden is seen on stage as he and Senator Bernie Sanders take part in the 11th Democratic Party 2020 presidential debate in a CNN Washington Bureau studio in Washington, D.C. on March 15, 2020. MANDEL NGAN/Getty Images A video that has recently come to light from 1993 appears to show the…