Share on PinterestNew research examines what happens to the human heart when in space. Stocktrek Images/Getty ImagesAmerican astronaut Mark Kelly spent 340 days in space, and changes to his body help researchers understand the effects…

WHO ‘strongly’ against hydroxychloroquine use for COVID-19 prevention
Share on PinterestA WHO panel has issued a ‘strong recommendation’ against the use of hydroxychloroquine for the prevention of COVID-19. GEORGE FREY/AFP via Getty ImagesLaboratory-based studies and non-randomized preliminary studies in humans initially led researchers…