Thirty years: Did you mean...?

The Denisovans are an extinct group of fossil humans who, along with their sister group the Neanderthals, also share an ancestor with Homo sapiens. Thus far, they are known only from Denisova Cave in the Altai Mountains in Siberia...

Maria Theresa (1717-1780) was the ruler of the Habsburg Monarchy, a sprawling empire that included Austria, Hungary, Bohemia, and other territories spread out across Italy, the Netherlands, and Central Europe...

Neanderthals are an extinct group of fossil humans that appeared in Western Eurasia in the mid-Middle Pleistocene and shared the stage with the first modern humans arriving in Europe from around 45,000 years ago, before disappearing...

Agriculture arose independently at several locations across the world, beginning about 12,000 years ago. The first crops and livestock were domesticated in six rather diffuse areas including the Near East, China, Southeast...

The term “Athenian Calendar” (also called the “Attic Calendar”) has become somewhat of a misnomer, since Ancient Athenians never really used just one method to reckon the passage of time. Athenians, especially from the 3rd...

The Dade Massacre (also given as the Dade Battle, 28 December 1835) was the opening engagement of the Second Seminole War (1835-1842) between Euro-American forces and those of the Seminole...

An ice age is a period in which the earth's climate is colder than normal, with ice sheets capping the poles and glaciers dominating higher altitudes. Within an ice age, there are varying pulses of colder and warmer climatic conditions...

The Doolittle Raid saw 16 US B-25 bombers hit Tokyo and other targets in Japan on 18 April 1942. This was the first time that Japan's home islands had been bombed since Japan's infamous attack...

Judas Iscariot was one of the original disciples of Jesus of Nazareth (d. c. 30 CE), one of the twelve apostles. For handing Jesus over to the authorities, as described in the gospels, he has become the epitome of the act of betrayal...

Frederick II of Prussia (1712-1786), better known as Frederick the Great, was one of the most consequential rulers of 18th-century Europe. A scion of the House of Hohenzollern, he came to power in 1740...