Researchers in China claim to have created the first samples of hexagonal diamond-a form of carbon arranged in a hexagonal lattice that is harder and stiffer than natural diamond. Long theorized and found only in meteorites, this breakthrough could unlock new industrial applications if production can be scaled.
Separately, a new study published in Science finds that climate change is causing fish to grow smaller. Rising ocean temperatures are pushing species to mature faster and at reduced sizes, potentially cutting global fishery yields by 50%.
Scientists say the trend threatens a critical protein source for billions and underscores the urgency of reducing carbon emissions.