As websites, I browse for science:
http://www.newscientist.com/
http://www.boingboing.net/
http://science.slashdot.org/
http://www.nature.com/
http://www.sciam.com/
http://www.theregister.co.uk/
http://discovermagazine.com/
and I include those in my newsfeeds along with the NIH RSS. Also in my feeds are
Flipboard Tech
Flipboard Wired Magazine
Flipboard Make Magazine
Hacker News
ProPublica
Gamification
Science Magazine
In Zite, I use
Science News
Gadgets
Technology
Alternative Medicine
Bioinformatics
Informatics
In Pulse, I go with Slashdot and also
Smithsonian Science
Cool Hunting
Slashgear
Discover Magazine
Wired: Science
and I have not used but intend to try the WebMD app.
I hope you aggregate and rank everyone's choices! I think some really good ones will come to the top that way.