I don't know too much about science on Steem, besides that every now and then I meet some cool scientists who happen to also use Steem. Examples include @dexterdev, @trang, @lemouth, @scienceangel, and @andrewagostini.

There is something called @steemstem which tries to promote good science content on the platform but I haven't had much interaction with them. There are also some great science journalists such as @simoxenham.

I'm excited about Steem for science since it provides a venue for global discourse and realtime open science. Perhaps some communities will form based around SMTs. However, it's also an unresolved question whether Steem's incentive model's will be beneficial or destructive for knowledge production.