UNDER THE MICROSCOPE The modern science of in vitro fertilization began 50 years ago, with an experiment in rabbits that selected for their sex.
BRAINBOW Scientists have imaged the fruit fly brain in new detail. Colors highlight the paths of nerve cells that have been mapped so far. Cells with bodies close together share the same color, but not necessarily the same function.
Full Adult Fly Tracing Community, Philipp Schlegel/Drosophila Connectomics Group/Univ. of Cambridge
GOTCHA A new machine, shaped sort of like a five-fingered arcade claw, gently encloses soft-bodied sea creatures (like this cephalopod) to study before releasing them, unharmed, back into the ocean.