ChemistryExtra-hard hexagonal diamonds can now be grown in a lab Hexagonal diamond up to 60 per cent stronger than normal diamonds could be used to create super-tough drilling and cutting tools for industrial applications 51¶¯Âþ
CommentThe best science fiction books of 2025 so far From generation ships to climate change, there has been some stellar sci-fi out in the past six months. Our columnist Emily H. Wilson picks her favourites Culture