For the Sake of Astronaut Health, Should we Make the ISS Dirtier?

'Stuck' NASA astronauts on ISS grilled on Earthly politics as long 9-month mission nears end. 'From my standpoint, politics is not playing into this at all.'

Spectacular photo taken from ISS shows 'gigantic jet' of upward-shooting lightning towering 50 miles over New Orleans

An small microbial ecosystem has formed on the International Space Station | The largest study yet of the ISS's microbes hints we’re may be keeping it too clean.