German-born scientist Albert Einstein, who passed away in 1955, is best-known for his groundbreaking work on the theory of relativity.... The theory itself was published in 1915 and came after Einstein worked with his Swiss colleague Michele Besso.It remains valid to this day and revolutionised how people thought about gravity as Einstein identified gravitation as a geometric warping of space and time. While this transformed understanding of space, time and gravity, it also helped change modern

Open this photo in gallery An olive tree burns as fires have been raging through the countryside in Cuglieri, near Oristano, Sardinia, Italy, July 25, 2021. Alessandro Tocco/ The Associated PressFires raged Sunday on Italy’s Mediterranean island of Sardinia, where nearly 400 people were evacuated overnight.... No deaths or injuries have been reported. Firefighters said several homes were damaged in the island’s western interior region.... Civil protection authorities said a preliminary survey