As always, take a gander at the large-scale 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 jurvetson
Physical Science. From Flickr, by Tetine
Environment. From OAR/ERL/National Severe Storms Laboratory, via pingnews.com
Humanities & Social Science. From Flickr, by WachoPerro!
Education & Careers. From Flickr, by jurek d.
Politics. From DOE, via Wikimedia Commons
Medicine & Health. From Flickr, by gierszewski
Brain & Behavior. From Flickr, by fabbio
Technology: A 64-bit memory chip from the mid-1960s. From Flickr, by jurvetson