In a new study, researchers carried out the most extensive coordinated comparison of optical clocks to date by operating clocks and the links connecting them simultaneously across six countries. Spanning thousands of kilometers, the experiment represents a significant step toward redefining the second and ultimately establishing a global optical time scale.
Lawmakers voice concerns over claims that Boeing threatens staff who raise safety concerns.
Implementation of all RAG techniques in a simpler way — FareedKhan-dev/all-rag-techniques
A model that includes propagating voids predicts the extent of plasma turbulence in a tokamak.
Use of common psychiatric medications (anxiolytics, hypnotics and sedatives, and antidepressants) is linked to a higher risk of developing amyotrophic lateral sclerosis (ALS), and poorer outcomes after diagnosis with shorter survival and faster functional decline, according to a nationwide Swedish study led by Karolinska Institutet
Sci. Adv. 11, eads7908 (2025). DOI:10.1126/sciadv.ads7908
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