A curling iron is one of the best ways to turn up the volume on your hair. But the market is awash in options: Titanium or ceramic? A ½-inch or 2-inch barrel diameter? Which is best for tight curls or ...

Rethinking imperfections: How defects are powering brighter perovskite emissions In materials science, defects are usually seen as problems, unwanted microscopic features that degrade performance, ...