Loki is known as the trickster god in Norse mythology. He is a shapeshifter and often causes mischief or trouble for the other gods, but also helps them at times. Loki is the father of Hel, the goddess of the underworld, and the wolf Fenrir.

Prime numbers are the building blocks of mathematics; the first few prime numbers are 2, 3, 5, 7, and 11.

Mountain gorillas are critically endangered, with only around 1,000 individuals remaining in the wild. They are found in the Virunga Mountains that span the borders of Rwanda, Uganda and the Democratic Republic of Congo.

While Al Capone was infamous for numerous crimes during the Prohibition era, including bootlegging and organised crime, it was tax evasion that ultimately led to his imprisonment in 1931. Despite the violent crimes he was involved in, it proved difficult to gather enough evidence to convict him for these. As a result, the government targeted his income, leading to his downfall.

The process of secondary fermentation, in which additional sugar and yeast are added to base wine, is used to create carbonated wines like Champagne and other sparkling wines. This process can happen within the individual bottles themselves or in large tanks before bottling.

The flared pants became popular in the 1960s as an expression of the counterculture and a rejection of conservative styles. They continued to be popular throughout the 1970s, particularly in the United States.

The musical Hamilton is largely set in New York City during the American Revolution and early years of the United States. While some events take place in other locations, such as the Battle of Yorktown in Virginia, most of the story unfolds in New York, where Alexander Hamilton lived and worked for much of his life.

The catalytic converter is an essential part of a vehicle's exhaust system. Its purpose is to convert harmful pollutants in exhaust gas, such as carbon monoxide and hydrocarbons, into less harmful emissions before they exit the tailpipe.

In the Marvel universe, Bruce Banner transforms into the Hulk when exposed to gamma radiation. The Hulk is known for his incredible strength and often struggles to control his anger.

The Fujita Scale, or F-Scale, was introduced in 1971 by Tetsuya Theodore Fujita to rate the intensity of tornadoes based upon the damage they cause. In the United States, an Enhanced Fujita Scale (EF-Scale) has been adopted since 2007 to provide more precision.