Moscow says claims by American officials about the possibility of Russia using chemical weapons in Ukraine were 'baseless' as politicians and experts were becoming more skeptical about Kiev’s allegations...
Skeptics have seized on the rapid development of the vaccines to undermine the public’s trust in them. But the breakthroughs behind the vaccines unfolded over decades as scientists across the world pursued research in disparate areas, never imagining their work would one day come together to tame the pandemic of the century....
