Chemical libraries are collections of molecules that are synthesized with the aim that they represent a given fraction of the theoretically possible chemical compounds that have yet been made.

The marigold-shaped microparticles pictured here are designed to deliver drugs through the bloodstream using sound. Developed by researchers at ETH Zurich and the Max Planck Institute for ...

Donald Trump is now the 47th president of the United States, as well as the 45th president, a businessman - and a man who knows how to put on a show. Former presidents, Trump family members, tech ...

EL PAÍS looks back at the swearing-in ceremony, which is held every four years at the Capitol in Washington Jan 20, 2025 - 12:56CET ...