Underwater noise is a threat to marine life

Oceans are full of sound. Waves, earthquakes and calving icebergs all contribute to the underwater soundscape. But so do human activities, and this can be a problem for marine life as it can seriously affect their physiology, ...

Blue straggler stars are weird

All stars follow a particular path in their lives once they start fusing hydrogen. As they live they steadily get brighter and hotter until they turn to fusing other elements. Every star follows this exact same path…except ...

High-performance visible-light lasers that fit on a fingertip

As technologies keep advancing at exponential rates and demand for new devices rises accordingly, miniaturizing systems into chips has become increasingly important. Microelectronics has changed the way we manipulate electricity, ...

Progress in perovskite LEDs for deep-blue light

The deep blue of your LED display is likely produced by indium gallium nitride (InGaN), a costly substance. In the field of LEDs, researchers are seeking alternatives in a type of perovskite known as quasi-2D Ruddlesden‒Popper ...

Blue light might be bad for humans—but good for mangoes

We're often told to limit our "screen time," thanks in part to the harsh blue light that screens can emit. Plants can detect blue light too, but instead of causing sleepless nights for our green friends, it could help make ...

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