I have already retrieved two excellent resources:-
1- Duke University Graduate School Scientific Writing Course.
2- Standford University Writing in the Sciences - Self-Paced.
Links are provided below
Please share with us any other recommended MOOC resources.
Thank you
https://cgi.duke.edu/web/sciwriting/index.php
http://online.stanford.edu/course/writing-sciences-self-paced-spring-2016