NASA wants to know how much life it's venting into space
To comply, NASA has sought to sanitize Mars rovers at a threshold of no more than 300,000 bacterial spores on any surface.
Daily Maverick on MSN46m
We need humility and courage in this new age of hubris, nationalism and division
If US President Donald Trump succeeds in contributing to restoring global peace that would truly be something. But, I am not a fan of any kind of chest-beating nationalism.