Over two hours, a rat embryonic microglial cell (green, marked with asterisk) engulfs a neighboring brain stem cell (red, marked with arrow). Once engulfed, the stem cell appears yellow. Researchers think that microglia gobble up neural stem cells to prune brain size during development.
Credit: Cunningham, et al. The Journal of Neuroscience 2013. Reprinted with permission.
Even if science can’t make life longer, perhaps a pill can make a long life better
The gene patenting decision from a plaintiff’s point of view
With everyday materials, two research teams conceal ordinary objects
In mating display, male birds match moves to songs
Coverage of the 2013 American Association for the Advancement of Science meeting
The Year in Science 2012
Three-part series on the scientific struggle to explain the conscious self
Tables of contents, columns and FAQs on SN Prime for iPad