The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

The latest short science news items from C&EN. Open an introductory chemistry textbook. What is a covalent bond? A covalent bond occurs when atoms share electrons in a molecule. What is a hydrogen ...

One class of drugs that has shown promise in treating diseases ranging from lung cancer to COVID-19 are targeted covalent inhibitors (TCIs). These small molecule drugs form covalent bonds with their ...

A structure of the drug ibrutinib. The drug ibrutinib makes a covalent bond to Bruton's tyrosine kinase, an important cancer target. Credit: RCSB PDB/Yang H. Ku Enticing atoms to share their electrons ...

Plutonium has captured the attention of scientists since its discovery in the early 1940s. This enigmatic element has an important role to play in emerging energy technologies like nuclear batteries ...

Prior to 2000, many drugs that formed a covalent bond with targets did so non-selectively, which often led to undesired side effects when compared to non-covalent drugs. This led to the belief that ...

Graphene oxide is composed of oxygenated functional groups, the most prevalent of which are carboxyl, carbonyl, epoxy, and hydroxyl. These functional groups present on graphe are polar, making it very ...