San Francisco photographer Sharon Beals photographed hundreds of birds nests in the collection of the California Academy of Sciences and other science museums. She's posted the stunning images on Flickr and they are also compiled in her recent book, "Nests: Fifty Nests and the Birds that Built Them." (Thanks, Jennifer Lum!)
David Pescovitz is Boing Boing's co-editor/managing partner. He's also a research director at Institute for the Future. On Instagram, he's @pesco.