It's that time of the week again! Here are the large versions of this week's channel photos.
(Have a photo you'd like to send in? Email it to firstname.lastname@example.org, or assign the tag "sbhomepage" to one of your photos on Flickr. Note: be sure to assign your photo an "attribution only" or "share and share alike" Creative Commons license so that we can use it.)
First photo here, the rest below the fold.
Life Science. From Flickr, by dro!d
Physical Science. From Flickr, by jurvetson
Environment. The glacial waters of Patagonia. From Flickr, by angela7dreams
Humanities & Social Science. From Flickr, by (: Petra :)
Education & Careers. From Flickr, by CG. Droid
Politics. From the Department of Defense
Medicine & Health. Prescription Expired. From Flickr, by FotoEdge
Brain & Behavior. From Flickr, by peasap
Technology. From Flickr, by Letheravensoar