You may manage your subscription options from your Science X profile
All you need to do is register an account with Science X. Once you log in, click on your 'Profile' located on the menu, flush right.
You will see a hyperlink tab called 'Newsletter'. By clicking on the 'Newsletter' hyperlink you will see various subject category options, check as many or few of the available options.
If you decided to change your Newsletter settings, click 'Save' after you make the changes and the system will update your personal preferences.