Scientists believed Covid leaked from Wuhan lab but feared debate could hurt “international harmony”
Scientists were particularly concerned by a part of Covid-19 called the furin cleavage site, a section of the spike protein which helps it enter cells
The Countries Holding The World’s Nuclear Arsenal (infographic)
Currently, there are estimated to be over 13 thousand nuclear warheads in the hands of nine countries
Officers rescue pilot seconds before train hits crashed airplane on railroad tracks (video)
Now, that was a close call...
