An organic light-emitting diode has been integrated with an optically driven organic laser to produce laser light from electricity. The design bypasses many of the challenges posed by direct electrical input in such devices.

Are protected areas slowing down global biodiversity declines? A global analysis provides evidence that they are, although effects vary across groups of species, and what happens outside protected areas matters, too.

An impressive combination of computational modelling and experimental techniques in live zebrafish embryos reveals how the heart initiates its organized and rhythmic beating.

The gut contents of a fossilized trilobite, Bohemolichas incola, from the Ordovician period (about 465 million years ago), were imaged by a technique called synchrotron microtomography and fully itemized. The results indicate that the animal fed indiscriminately on small shelly invertebrates and that its gut had a neutral to alkaline pH.