Scientists recently mapped the louse genome. It has only 108 million letters of DNA, which is fewer than in other insects they've mapped. Courtesy Aurelie Veracx hide caption

itoggle caption Courtesy Aurelie Veracx

Called red currant tomatoes, these Solanum pimpinellifolium are actually a tomato cousin, in the nightshade family. The fruits are intensely tomato-flavored and very sweet. Harry Klee hide caption

itoggle caption Harry Klee

Scientists report they have made a living cell from DNA that was originally synthesized in a lab. iStockphoto.com hide caption

itoggle caption iStockphoto.com

Someone who looks like this could be in your family tree. Chip Clark/Courtesy of the Smithsonian Institution hide caption

itoggle caption Chip Clark/Courtesy of the Smithsonian Institution

Red and green aphids get their different colors by producing carotenoids, or color compounds. Courtesy of Charles Hedgcock, R.B.P. hide caption

itoggle caption Courtesy of Charles Hedgcock, R.B.P.

Researchers Evgenia Ilyinskaya and Asgerdur Sigurdardottir sweep up volcanic ash from a small bridge just south of the Eyjafjallajokull volcano. The ash will be taken back to the University of Iceland for analysis. Joe Palca/NPR hide caption

itoggle caption Joe Palca/NPR

Even the spin of a seemingly random roulette wheel can be predicted if you have the right information, says Antonio Acin of the Institute of Photonic Sciences in Barcelona. iStockphoto.com hide caption

itoggle caption iStockphoto.com

An actor prepares to receive "shocks" from the audience on a fake TV game show, staged for a French documentary. Psychologists have questioned the ethics of such experiments because of possible mental trauma suffered by participants. Christophe Russeil, HO/AP hide caption

itoggle caption Christophe Russeil, HO/AP

DNA analysis showed that most dogs share genetic markers with Middle Eastern gray wolves, like this one photographed in Israel. Courtesy of Nadav Perez hide caption

itoggle caption Courtesy of Nadav Perez

Researchers were able to correctly match bacterial DNA on keyboards and computer mice with their individual users. This bacterial "fingerprint" could become a new forensic tool, though it's not yet ready for the courtroom. istockphoto.com hide caption

itoggle caption istockphoto.com