Dec. 17, 2024 — The quantum Hall effect, a fundamental effect in quantum mechanics, not only generates an electric but also a magnetic current. It arises from the motion of electrons on an orbit ...

Stay informed on Saudi Arabia’s rapid changes, developments, and ongoing efforts to reshape the Middle East and beyond.

Greece's President Katerina Sakelaropoulou honored on Wednesday an 84-year-old philanthropist who sold her only land to buy an ambulance for her town. Athena Papachristou, a retiree farmer, donated ...