Question: what is the most noticeable change to the bacteria you've noticed?

Delma Childers answered on 8 Dec 2015:

The biggest change in space is that bacteria grow faster and form bigger, stickier clumps of communities. This can be an issue in the confined area of a space station, but I’m looking at how these changes to bacteria in space can help some of them perform some useful jobs a bit better (like mining for metals).