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Syrian president arrives in US for landmark visit

Syria's President Ahmed al-Sharaa arrived in the United States on Saturday for a landmark official visit, his country's state news agency reported, a day after Washington removed him from a terrorism blacklist. Sharaa, whose rebel forces ousted longtime ruler Bashar al-Assad

Tiny laser could transform medicine and quantum science

A team at the University of Stuttgart has engineered a compact short-pulse laser that achieves up to 80% efficiency—far surpassing current models. Their new multipass design reuses light within a small crystal, combining power and precision in a palm-sized system. It opens the

Common antidepressant found to work in just two weeks

Sertraline (Zoloft) may relieve emotional symptoms of depression and anxiety within two weeks, while physical side effects stabilize later. The research highlights how antidepressants can act on specific symptom networks rather than uniformly across all aspects of depression.