Slightly clickbait-y title, but super cool and important discovery!
I found the following particularly interesting:
They also learned that in pairings that work, both partners adapt to each other — a phenomenon that has been largely overlooked. It wasn’t just the bacteria adapting to a new environment; the host changed too, even in the early stages. “That is a fundamentally important question that people have ignored,” Richards said. “This opens the doors for real advances.”