In a crystal, like salt or diamond, atoms are regularly spaced. But in a “time crystal”? Frank Wilczek, professor at the Massachusetts Institute of Technology and Nobel Prize winner in physics for his ...

Born into a family of seven children, Klimt was exposed to artistic activities from an early age. His father, Ernst Klimt, was a gold engraver and metalworker, while his mother, Anna Finster, was an ...

Cosimo de’ Medici, known as Cosimo the Elder (1389–1464), was the founder of the Medici dynasty and one of the most influential figures in the 15th-century Florence. A banker and statesman, Cosimo was ...

What was the role and life of women in the Middle Ages within medieval society? Their existence varied according to age and social status, their place within the family, their role in the couple, ...

The Song Dynasty began in 960 CE, following several decades of political chaos in China. China was divided and in the midst of civil war, with each faction trying to recreate the Empire and take ...

In the Middle Ages, the imaginary is an integral part of reality. The world of that time cannot be conceived otherwise. Within this panorama, both real and wonderful, plants play a major role in ...

How Long Will It Take to Get to Each of the Planets We are 41 million kilometers from Venus, 78 million kilometers from Mars, and 4.3 billion kilometers from Neptune. How long did it take various ...

In Arabic, Islam means “submission to God,” and a Muslim is a person “devoted to God.” Like Jews and Christians, Muslims are monotheists. They believe there is only one God who created the world and ...

Throughout all ages, war has been a complex and costly endeavor. The outcome and characteristics of confrontations between organized groups of armed people to resolve issues of power, territory, and ...

Judicial investigations were practiced by both the royal court — for example, in England — and the Church, in their fight not only against heresy but also against other crimes within the jurisdiction ...

The Rif War between 1921 and 1926 was a succession of armed conflicts. It pitted the Spanish and then French colonial powers against the Riffian Republic, led by Abdelkrim el-Khattabi. The Rif War was ...

The lesser evil, or the lesser of two evils, is an ethical principle that justifies choosing one evil in order to avoid a greater evil. The condition of the principle is that of a strictly binary ...