Exchange may refer to:

Eric Roberson (born September 25, 1976) is an American R&B and soul singer-songwriter from Rahway, New Jersey, United States. He is sometimes referred to simply as Erro. Roberson started his journey as a high school actor, landing prominent roles in "The Tap dance Kid", Grease", and "Anything Goes". In 1990, he won "Mr. Black teen Universe, winning a scholarship to Howard University in Washington, DC. His first single, "The Moon", was released through Warner Bros. records in 1994. Roberson recorded an album for that label, which remained unreleased. He subsequently returned to Howard University to complete his studies in Musical Theatre. After performing in a number of musicals and plays, he landed a songwriting deal through the EMI label, and went on to collaborate with Philadelphia-based artists such as Jill Scott, Musiq Soulchild, and most extensively, DJ Jazzy Jeff. As a member of Jeff's A Touch Of Jazz production company, Roberson made contributions to Jeff's debut album, The Magnificent in 2002. He continues songwriting work as well as releasing his own material through his Blue Erro Soul imprint. He also appeared on DJ Spinna's Intergalactic Soul LP in 2006.

The Columbian Exchange was a dramatically widespread exchange of animals, plants, culture, human populations (including slaves), communicable disease, and ideas between the Western and Eastern Hemispheres. The contact between the two areas circulated a wide variety of new crops and livestock which supported increases in population in both hemispheres. Explorers returned to Europe with maize, potatoes, and tomatoes, which became very important crops in Eurasia by the 18th century. Similarly, Europeans introduced manioc and the peanut to tropical Southeast Asia and West Africa, where they flourished and supported growth in populations on soils that otherwise would not produce large yields.

In the biological and ecological exchange that took place following Spanish establishment of colonies in New World, people of Europe and Africa settled in the New World, and animals, plants and diseases of Eurasia and the Western Hemisphere were introduced to each area in an interchange.

This exchange of plants and animals transformed European, American, African, and Asian ways of life. New foods became staples of human diets, and new growing regions opened up for crops. For example, before AD 1000, potatoes were not grown outside of South America. By the 1840s, Ireland was so dependent on the potato that a diseased crop led to the devastating Irish Potato Famine. Since being introduced by 16th-century Portuguese traders, who brought them from the Americas,maize and manioc replaced traditional African crops as the continent’s most important staple food crops. New staple crops that were introduced to Asia from the Americas via Spanish colonizers in the 16th century, including maize and sweet potatoes, contributed to the population growth in Asia.

Sven Magnus Øen Carlsen (born 30 November 1990) is a Norwegian chess Grandmaster and chess prodigy who is currently the number-one ranked player in the world. In January 2010 he became the seventh player in history to be ranked number one in the world on the official FIDE rating list. His peak rating is 2835, the second highest in history, after Garry Kasparov.

On 26 April 2004 Carlsen became a Grandmaster at the age of &1000000000000001300000013 years, &10000000000000148000000148 days, making him the third-youngest Grandmaster in history. On 1 January 2010 the new FIDE rating list was published, and at the age of &1000000000000001900000019 years, &1000000000000003200000032 days, he became the youngest chess player in history to be ranked world number one, breaking the record previously held by Vladimir Kramnik. Carlsen was also the 2009 World blitz chess champion.

His performance at the September–October 2009 Nanjing Pearl Spring tournament has been described as one of the greatest in history and lifted him to an Elo rating of 2801, making him the fifth player to achieve a rating over 2800 – and aged 18 years 10 months at the time, by far the youngest to do so.

Fabiano Luigi Caruana (born July 30, 1992) is a Grandmaster and chess prodigy with dual citizenship of Italy and the United States.

On 15 July 2007 Caruana became a Grandmaster at the age of 14 years, 11 months, 20 days – the youngest Grandmaster in the history of both Italy and the United States.

In the May 2012 FIDE list, he has an Elo rating of 2770, making him 8th in the world and Top World Junior.

Fabiano Caruana was born on July 30, 1992 in Miami, Florida of an Italian-American father and an Italian mother. At the age of 4 his family relocated from Miami, Florida to Park Slope, Brooklyn. Coincidentally, this was the same neighborhood where Bobby Fischer lived during his youth. At age 5, his chess talent was discovered in an after school chess program at Congregation Beth Elohim in Park Slope, Brooklyn. That same year he played his first tournament at the Polgar Chess Center in Queens, New York.

Up to the age of twelve, he lived and played in the United States, occasionally traveling to Europe and South America for tournaments.