Keep in touch with BiographySet for more updates on all celebrities' Biographies. Michael W. Smith Biography He then moved to Canada to begin his postdoctoral research with Har Gobind Khorana at the British Columbia Research Council in Vancouver. What did I know? Michael regularly contributed songs and original Smith logged a total of 4,867 hours of flying time, piloting 28 different types of civilian and military aircraft. Like most other teens his age, Michael's only goal initially was to look . Time and again, audiences reported an evening with him was The Nutcracker Suite, a recording by Spike Jones. This study led to more extensive investigations of the reactions of carbodumides with acids, including phosphoric acid esters and to a general procedure for the preparation of nucleoside-3,5 cyclic phosphates, a class of compounds whose existence and great biological significance had only recently been discovered. And I hated the war-time meals that were provided at lunch, as well as the prefect who insisted that I eat the awful food). 1989 Michael W. Smith Christmas 1988 I 2 Eye 1987 The Live Set 1986 The Big Picture 1984 Michael W. Smith 2 1983 Michael W. Smith Project For Album Song Listings Click Here Back to Top Grammy Awards 2003 Worship Again (Best Pop/Contemporary Gospel Album) 1995 I'll Lead You Home (Best Pop/Contemporary Gospel Album) They have been married for 35 years since 5th Sep 1981. back of Sal's Barber Shop in Great Notch, watching the wax curl up from Smith has gained tremendous working experience in the NBA and is in his 28th season as of 2022. Tony Award-winning Steppenwolf production, In 2009, he He is an actor and producer, known for Transatlantic (2023), Call Jane (2022) and Carol (2015). One of the first contractors was the Danish pharmaceutical company, Novo, who asked Zymos to develop a process for producing human insulin in yeast. The Space Shuttle 51L crew is shown during simulation at the Johnson Space Center before their ill fated flight. Michael Smith In October 2007, he releases his third Christmas album,Its a Wonderful Christmas. Smith made his acting debut as Billy Holden in Secret Adventures: Shrug in 1994. VeggieTales co-creators Mike Nawrocki and Smith collaborated to produce the Nurturing Steps childrens book series, which they released in May 2018. When I was ten my favorite recording artists were Roy Rogers, Phil Harris, 11 on the Billboard Hot 200 Chart. In the same year, he releases a live concert DVD titledWorship. Michael J. Smith, NASA astronaut, former Navy pilot; he died aboard space shuttle Challenger in 1986. He must have also pocketed a hefty sum from his job. The Nobel Prizes 1993, Editor Tore Frngsmyr, [Nobel Foundation], Stockholm, 1994. Share this. group in high school (Passaic Valley Regional, in Little Falls, New Jersey). Also get to know about one of the popular singers, actress, Kim Basinger. Instructions for the amino-acid sequence of a protein are contained in its gene, namely, in the sequence of DNA subunits, called nucleotides, that make up that gene. Click here for more. To go along with the book, he also published Lullaby, his debut album for kids. And my father, working his fathers market garden, grew primarily food crops rather than his preference, chrysanthemums. My wife Barbara and I live in Chicago and I am fortunate to be able to Full name. When Place in This World reached No. Michael is married for over 40 years and a father of five. Updates? Smith's widow joined other Challenger families to create the Challenger Centers, educational institutions designed to bring math and science alive for students across the United States and Canada. The actor not only proves his skill in acting. I decided that it was time for me to start paying back for the thirty years of fun that I had been able to have in research. I went to the local school, Marton Moss Church of England School for 6 years from the age of 5. His mother was a caterer. Beguine" and "Night And Day". GDPR. Within five years he was the Head Chef at a large, upscale bistro. songwriter was Cole Porter. Michael is active on Instagram with 159 K followers, and on Twitter with 568 K followers. Michael Smith (Chemist) Biography - Childhood, Life Achievements & Timeline Articles from Britannica Encyclopedias for elementary and high school students. It was his first flight as an astronaut. Smith was awarded the Congressional Space Medal, as well as the Defense Distinguished Service medal (both posthumously). ThoughtCo, Feb. 17, 2021, thoughtco.com/michael-j-smith-4587334. In 2009, Smith transitioned to anchoring and guest hosting such programs as Mike & Mike, First Take, SportsNation, Outside the Lines, NFL Live, and College Football Live. Burglar", "Paddy McGinty's Goat" and "Who Put The Overalls In Mrs. Murphy's Chowder". He became a Christian at This autobiography/biography was written Museum of Art. them, for The Teenclefs, and we had dance moves. Michael W. Smith - Wikipedia He thinks of bringing out the book to accompany that book. Personal information. His first record was great. Michael was the 2010 recipient of the prestigious Hans Christian Andersen Award Michael W. Smith is not having an affair with anyone presently. In 1981, Ben Hall and Earl Davie, of the University of Washington, invited me to be a scientific cofounder of a new biotechnology company, Zymos, which was funded by the Seattle venture capital group, Cable and Howse. We might have done the dance moves while we recorded. Enjoy reading!! contributed music to Edward Gorey's The Vinegar Works for Loyola University What Shows Have Been Renewed or Canceled? See: Michael's recollections below about his The basketball official appears to be a very private individual. octave down. He spent the next five years in training and working in various capacities in the agency, focusing on flight operations, night landings, and other areas. Over the course of his career, he has sold over 18 million albums. Smith has an estimated net worth of $14 Million. Grove, Florida, and worked six nights a week for three years at a coffeehouse, In the 1970s, Smith focused his research in molecular biology exclusively on how the genes within the DNA molecule act as reservoirs and transmitters of biological information. Miller, Jr., to establish a new interdisciplinary institute, the Biotechnology Laboratory. It is his first live worship album in ten years and he brings out a lot of effort. Smith has a sister named Kim Smith. Michael Smith biography - artistwiki.com Michaels 20 year collaboration with Chicago vocalist, and producer He tended to drift toward drink and drugs after high school. The film was good and earn good revenue in the market. Michael J. Smith applied to the NASA astronaut program and was selected for duty in 1980. Both of his parents were hard working people of humble origins. by the Laureate. Evans, and graduated in 1953, with the financial support of a Blackpool Education Committee Scholarship. As a beloved master in the folk music scene, Michael always As a result, Michael Smiths net worth is likely to be a significant amount. same year he met his wife Debbie. From there, he became a flight instructor, before taking an assignment in Vietnam. World War II: Fleet Admiral William Halsey Jr. Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. In addition, he worked on the score and soundtrack for this film with his son. coming clean and renewing his faith in October, 1979. In 1943 he appeared for the Elevenplus" examination which was used in the English schools in those days. I loved "Earth Angel" by The Penguins After his schooling he was able to procure another scholarship and entered the chemistry honors program at the University of Manchester. He had his early schooling at the local school, Marton Moss Church of England School. Clearly, science was my metier, and I was lucky to have a chemistry teacher, Sidney Law, who stimulated my interest in chemistry and who took a personal interest in me (he told me I should read a better newspaper than the one to which my parents subscribed and, as a consequence, I became a life-long reader of the Manchester Guardian. They met in June and were married in [2] Smith was an original correspondent for E:60, which launched in 2007. During his schooling he also became a boy scout. His father worked at Ashland Oil Refinery in Catlettsburg, Kentucky. The album sold 12,000 copies in its first week of release and debuted at No. He donated the Royal Bank Award prize money to the BC Cancer Foundation. "[10] In the same year, the Smiths opened a sister property, The Inn at Fortune Bridge. Smith is the son of Paul and Barbara Smith. When I was five my Aunt Mamie taught me to sing for company: "The Boston He had a great admiration for cooking and so he decided to make a career out of it. Michael W. Smith - IMDb | The Chronicle Herald", "Chef Michael Smith | Recipes, Bio, Full Episodes, Photos, Exclusive Behind-the-Scenes", "Chef Michael Smith preaches 'spend time to save time' in new cookbook 'Make Ahead Meals' - National | Globalnews.ca", "New P.E.I. Field Museum, Woodstock Opera House, Irish American Heritage Center, His work enabled researchers to introduce specific mutations into genes and paved the way to study gene therapy approaches for cystic fibrosis, sickle-cell disease, and hemophilia, among other applications. He gets dropped out after one semester. Michael W. Smith is married to Deborah Kay Davis. Michael Smith, the lyricist, composer and performer of renown, was a voracious reader and never at a loss for material. The words of essayist Ann Carson appear in a surprising way Pepper and now I will never be free. Smith is Prince Edward Island's Food Ambassador, a nutritional activist, and an advocate for sustainable home cooking and farm-to-table cuisine. Based on his experience, Smiths income may be in the higher range. Michael John Smith [1] Date of birth. performing with a Christian group called "Higher Ground" in 1981, the outside Chicago. His work focused on cyclohexane diols and his thesis was titled Studies in the stereochemistry of diols and their derivatives.. I did not want to go to Arnold School because the pupils were considered to be snobs and I thought that I would be ostracized by my friends in Marton Moss. His family comprises his father, Michel Sr., his mother, Denise, and two other siblings, one of whom is a musician named Winston Vicks, and him being the eldest of the three. There I worked on the synthesis of ribo-oligonucleotides, that most challenging of chemical problems for a nucleic acid chemist. Michael S. Smith - Forbes Ian Michael Smith (born May 5, 1987) is an American actor, known for his starring role in Simon Birch.. His short physical stature (3 ft 1 in (0.94 m)) is a result of Morquio syndrome, a rare enzymatic disorder affecting the circulatory, muscular and skeletal systems.. Life and work. Smith is 65 years old as of October 2022. In 1960, Khorana moved to the Institute for Enzyme Research at the University of WisconsinMadison, and Smith followed suit. I've always wanted to stand in the gap when I see a hurting kid. Michael Smith - Biography, Age, Wiki, Facts and Family - in4fp.com Michael Smith was born on 26 April 1932 in Blackpool, England, to Mary Agnes Smith and Rowland Smith. [14], "Cooking with Chef Michael Smith | Atlantic Business Magazine", "Chef Michael Smith recharges with travel", "Chef Michael Smith and wife, Chastity, revolutionize dining on P.E.I. We wish Michael Smith much success in the future. He does not have any brothers. At age seventeen, Smith started cooking in kitchens while attending art school. In 2006, he performs as the lead actor in The Second Chance. 6 on the Billboard Hot 100 in 1991, it became his most commercially successful single. When I read about cultures where Mini Bio (1) Cory Michael Smith was born on November 14, 1986 in Columbus, Ohio, USA. Memorial plaque at the Astrononaut Memorial wall in Florida. an oil refinery and his mom was a caterer and church secretary. Michael Smith career. over and over and over. Smiths second album, Surrounded, his first live worship CD in ten years, was released on February 23, 2018. Smith was an athletic type and played tennis and squash. and the first song I wrote was a calypso setting of the Robert Louis Stevenson Barbara Smith is her mother's name and her father's name is Paul Smith. For a long time I thought I was a folksinger, because I liked to sing folk songs. their songs too, plus they played guitars the way I wanted to, great rhythms Biography of Michael J. Smith, Challenger Astronaut. He wrote the music for the 1990 It pays off as the group sings a triumphant chorus of praise. The airport in his hometown is named for him. Retrieved from https://www.thoughtco.com/michael-j-smith-4587334. His parents identity has not been revealed in the media. Michael Smith, (born April 26, 1932, Blackpool, Englanddied October 4, 2000, Vancouver, British Columbia, Canada), British-born Canadian biochemist who won (with Kary B. Mullis) the 1993 Nobel Prize for Chemistry for his development of a technique called oligonucleotide-based site-directed mutagenesis, which enabled researchers to introduce specific mutations into genes and, thus, to the . Cory Michael Smith - Biography - IMDb This section about a living person needs additional citations for verification. That was a piece of luck. He is a celebrity instagram star. As a child, he discovered a love of music through his faith. Eventually, Smith was selected to be the pilot on STS-51L, aboard the Space Shuttle Challenger, which was his first flight to space. One difflcult chore was presented to me in 1991 when I became Acting Director of the Biomedical Research Centre, a privately funded research institute on the Campus of the University of British Columbia. From 1987 to 1995 he served as the director of the UBC Biotechnology Laboratory. In a more recent collaboration, Songs of a Catholic Childhood, they reflected Michael W. Smith Bio, Age, Net Worth, Family, Wife, Married, Song Michaels sixth studio album was released on October 1, 1990, by Reunion. However, I still was able to obtain a State Scholarship which supported me throughout my graduate studies until I finished my Ph.D. degree in 1956. https://www.britannica.com/biography/Michael-Smith-Canadian-chemist, The Nobel Prize - Biography of Michael Smith, The Canadian Encyclopedia - Biography of Michael Smith, Michael Smith - Student Encyclopedia (Ages 11 and up). The method provided researchers with a new way to study protein function. Michael W. Smith was born in Kenova, West Virginia. vain. The Heart Songs of Opal Whiteley was written with longtime collaborator The NBA referees career is continuing smoothly, hopefully, he is doing well in his personal life as well. Henbest. After graduation, Smith worked in Michelin three-star restaurants in Europe,[2] as well as kitchens in South Africa, the Caribbean,[3] and New York City. Allmusic gave the album a rating of four and a half stars, with Stephen Thomas Erlewine praising the gospel tunes with sparkling, perfect pop production. The Dayton Daily News James Lloyd gave the album a positive review, calling it his best effort to date. Smith received his second Grammy Award for the album in 1996 for Best Pop-Contemporary Gospel Album.. He became a Christian at the age of 10 and after graduation, moved to Nashville. Michael Smith height and weight. For his service in the Navy, he was given the Navy Distinguished Flying Cross, the Navy Commendation Medal, the Vietnam Cross of Gallantry, plus other medals for his work in the service. I did not, at the time, consider this to be luck. Michael J. Smith was the pilot aboard the space shuttle Challenger, which exploded on January 28, 1986. Strong, swarthy, infectious, and infused with Smiths signature poignant For instance, he refereed the 1990 McDonalds High School All-American Game. [9], In 2019, Smith was appointed to the Order of Canada as a member "for his contributions as a chef, entrepreneur and champion of local foods, as well as for his efforts to develop regional tourism. So, we can predict that he must have been paid a large sum of money for his service. Chef Michael Smith - IMDb His father played baseball in minor leagues, and that is where Michael gained his love for baseball. He then enrolled at The Culinary Institute of America, where he graduated second in his class. Henbest. His wife Debbie wrote most of the lyrics on his debut album "Project" (1983). His father worked as an oil refinery employee at the nearby Ashland Oil Refinery in Catlettsburg, Kentucky. Mandi is an experienced writer on various topics with a passion for telling stories with words. My supervisor was H.B. In 1983 he starts his career professionally by releasing his first album The Michael W. Smith Project. He then joined ESPN full-time in September 2004 as a senior writer for ESPN.com and an NFL Insider for SportsCenter and NFL Live. Space Shuttle Challenger crew in the White Room prior to launch. Helen and I wanted to return to the West Coast of North America, and I accepted a position with the Fisheries Research Board of Canada Laboratory in Vancouver. was a story that Johnny Ace died in a game of Russian Roulette, which was There When "Place in This World" reached No. Michael J. Smith was born on April 30, 1945, to Robert Lewis and Lucille S. Smith, in Beaufort, North Carolina. Michael S. Smith built Freeport LNG, a $15 billion complex on the Texas coast that chills and exports liquefied natural gas. Moreover, his albums were in the 30th and 31st top 10 entries in Billboards Top Christian Albums chart. Henbes. I was crazy about Elvis Presley for a As a soloist, Michael was a program During his college years, he played for Brigham Young University, where he was a consensus second team All-American. the disc as we sang. Petersen, Carolyn Collins. 2023 gewann Smith erstmals die PDC-Weltmeisterschaft, nachdem er 2019 und 2022 jeweils Vizeweltmeister geworden war, seither ist er Weltranglistenerster der PDC Order of Merit. He was born Michael Whitaker Smith on 7 October 1957 in Kenova, West Virginia, United States. There he worked under the supervision of Har Gobind Khorana who was developing new techniques of synthesizing nucleotides. A Million Lights is his single released on Aug 11, 2017. Mr. Paterson did not correct the problem with my teeth but he did introduce me to a wonderful scoutmaster, Mr. Barnes, who inducted me into the happy world of camping and outdoorsmanship which provided me with enjoyment and vacations throughout my secondary school years and right up to the present. In 2018, he released Songwriting, a CD recording He was an outstanding young organic chemist, and I was glad to have him as a supervisor of my work on cyclohexane diols. At that time I thought singing bass meant you sang the melody, only an It's a wonderful, eternal recording. (Songs of the Kerry Madwoman), set in a chamber opera, Michael Smith is a fitness model from Ohio, USA. forever in love. Michael W. Smith was born on October 7, 1957, and is now 65 years old age. and a chordal sense that never got old. primitive cats for about thirty seconds, but finally my feeling is that Puppet Festival, and touring for the Childrens Theatre Production. And the Poet Sang, (2013) with Jamie OReilly and Peter Swenson, and in Brechts But the schooling was first-rate, and in this I flourished, although not equally well in all subjects. Smith starred as the lead in Steve Taylors 2006 film The Second Chance. Michael Smith, the lyricist, composer and performer of renown, was a voracious (L to R) Mike Smith Ellison S. Onizuka, Judith A. Resnik and commander Francis R. (Dick) Scobee. His earnings will surely grow in the coming days if he continues to work in the league. Michaels album Ill Lead You Home was released by Reunion Records. However, the referee is in his sixties, so we can presume he might be a married man with a couple of children. Michael Smith - Bio, Net Worth, Salary Age, Height, Weight, Wiki Prix Nobel/ Nobel Lectures/The Nobel Prizes. An enjoyment that explains why I have a particular delight in living amid the rugged outdoors and beauty of British Columbia. I wanted to live in the world of "Begin The He went to the prestigious Arnold School where he developed an interest in chemistry. at Virginia Tech University, and had a limited run at the prestigious Museum of They also developed a synthetic DNA technique for introducing site-specific mutations into genes. He's the host of numerous cooking shows seen on Food Network Canada and in more than 100 . Born in England into a family of humble means, he grew up to be a good student and was able to continue his school education beyond a certain level because of a scholarship. Smith is Prince Edward Island's Food Ambassador, a nutritional activist, and an advocate for sustainable home cooking and farm-to-table cuisine.[1]. to write songs, some of which I can hardly believe are mine. (September 5, 1981 - present) (5 children), View agent, publicist, legal and company contact details on IMDbPro. Smith was born in Elmhurst, Illinois.A Chicago-area hospital worker approached his parents about him . I was socially shy and moody and was probably quite hard to understand. If youre a huge basketball fan, then chances are youre already Michael Smith Biography Memphis-Born NBA Referee. BiographySet | Celebrity Biography, Celebrity Net Worth, Sports Celebrities Bio, Celebrity Entertainment & Rumor, Bruna Tomaselli Biography Brazilian W Series Racer, Herbert Simon Biography Billionaire And Indiana Pacers Owner, As the referee likes to read a book, his favorite book is. He has hosted The Inn Chef, Chef at Home, and judged on Chopped: Canada on the Canadian Food Network. Submit a correction suggestion and help us fix it! His father was an oil refinery worker at the Ashland Oil Refinery. and raising my kids. While every effort has been made to follow citation style rules, there may be some discrepancies. Wallsend, England [2] In Relation. It has been very satisfying, in this case, to see established scientists, working in the various subdisciplines of biochemistry, come together in nation-wide collaborations to solve important problems in protein structure-function analysis and to work with Canadian industry in improving technology transfer which has been less than optimal in the past. While I knew this kind of chemistry was much more difficult than the cyclohexane stereochemistry in which I was trained, I wrote to him and was awarded a fellowship after an interview in London with the Director of the British Columbia Research Council, Dr. G.M. Frankie Laine, Jerry Lewis, and Les Paul and Mary Ford. as scary as The Nutcracker Suite, though. The talented sports personality was born on February 5, 1955, and raised in Memphis, Tennessee, USA. Visit Michael SMITH profile and read the full biography, watch videos and read all the latest news. Michael Paul Marshall Smith (born 3 May 1965) is an English novelist, screenwriter and short story writer who also writes as Michael Marshall, M. M. Smith and Michael Rutger. I have very much enjoyed recruiting and helping to get established the group of young faculty members that constitute the core of the Biotechnology Laboratory. The seven years from 1943 to 1950 were also a time when I became a boy scout. Language links are at the top of the page across from the title. The last year of our graduate studies saw me and my classmates writing to various American professors seeking post-doctoral fellowships. Smith also appeared in The Passion, a live musical film that premiered on FOX on March 20, 2016. music lexicon, Moby Dick may be some of Michaels best work! Discover Ian Michael Smith's Biography, Age, Height, Physical Stats, Dating/Affairs, Family and career updates. He enrolled in the U.S. Barbara Smith is her mothers name and her fathers name is Paul Smith. Nicknamed "Bully Boy", he plays in Professional Darts Corporation (PDC) events, where he is the reigning World Champion and World No. Michael Smith (chef) Michael Dixon Smith CM is an American-born Canadian chef and cookbook writer. So, Michael Smith's net worth is primarily based on his salary from NBA. He was born in Kenova, West Virginia. Michael Smith is having an affair. Life is short. Ray Acosta is another referee with considerable earnings. [5] His first television show, The Inn Chef (1998), was filmed on location at the Inn, and across Nova Scotia and Prince Edward Island. NobelPrize.org. melodies, the songs of Moby Dick are reminiscent of 19th century balladry, His two passions growing up were baseball and music. This misguided belief helped the problems of the Centre to become a public political football in an election year. Recorded at WFMT Studio in Chicago. on Decca. He also played football and participated in boxing while at the Naval Academy. for his adaptation of. The headmaster at Arnold School, Mr. Holdgate, at the end of my first term, sent me to a dentist, Mr. Paterson, in the hope that he could correct my protruding front teeth, about which I had been teased by my schoolmates. His song The Dutchman is considered a classic in the folk lexicon. Smith releases his first childrens album, Lullaby. That, in turn, stimulated me to become a reader of the New Yorker as soon as I came to North America, another life-long addiction). After Smiths older Christian buddies left for college, he started to experience emotions of isolation and alienation. ( 1991-10-17) 17 October 1991 (age 31) Place of birth. Website. My wife Helen and I separated in early 1983), moved to the Institute for Enzyme Research at the University of Wisconsin. Instagram star and YouTube influencer who is best recognized for his Natural Physique and personal training content. I was not proficient in Latin and so was not able to go to Oxford or Cambridge. His father played baseball in minor leagues, and that is where Michael gained his love for baseball. Anne Hills, have brought him to The NBA referees career is continuing smoothly, hopefully, he is doing well in his personal life as well. Michael's rich life included touring in North America for over He must have also pocketed a hefty sum from his job. He receives the American Music Award for Favorite Adult Contemporary New Artist in 1992. His death ended a distinguished career as a Navy pilot and a future in space flight. Facebook: thebiographyscoop As a young boy he also witnessed the devastation and loss of lives caused by the World War II even though his family lived in a relatively safe place. In 1961, he accepted a position with the Fisheries Research Board of Canada Laboratory in Vancouver where he worked for five years. He is best known for his appearances on the television series Charmed, where he played Belthazor, a Grimlock leader and Shax . We hope to discover more about Michaels spouse and kids in the coming days. And I remember one night, alone in the house with my baby brother Robin, when a stick of bombs fell on either side of the house. The students who cleared the examination became eligible to receive a scholarship for academic education. Soundtrack: Minari. Some of his more popular songs are "The Dutchman", (recorded by Liam Clancy and Steve Goodman), "Last Day of Pompeii", "Zippy", "Spoon River" and many others. https://www.thoughtco.com/michael-j-smith-4587334 (accessed May 2, 2023). His two To cite this section [7], On September 14, 2020, Smith joined NBC Sports to co-host a new show with Michael Holley, Brother From Another, on Peacock. I went to the local school, Marton Moss Church of England School for 6 years from the age of 5. Nighty Night and Good Night, the debut novel, was published on May 8. I cannot say it was the happiest time in my life (I was no good at sports, and proficiency in sport is important in private school life. At the time his friends joined college, he was busy with his lonely life. We cut a record in the When I was twenty-three or so I realized that I was probably a songwriter, though Early in 1961, I began to realize that it was time to move on. With the help of another State Scholarship, he finished his PhD degree in 1956 under the supervision of the outstanding organic chemist H.B. I had hoped to get a firstclass degree, but only got a 2(i)! Cory Michael Smith is an American actor, best known for his performance as 'The Riddler'/'Edward Nygma' in the series 'Gotham.' Check out this biography to know about his childhood, family, personal life, career, and achievements. His next assignment was as an instructor, before heading out to the Mediterranean for two tours of duty aboard the USS Saratoga. So, could it be he is trying to keep his partner and children out of the spotlight? Michael Smith (Dartspieler) - Wikipedia