The year 2000 in science and technology involved some significant events.

Astronomy and space exploration

* May 4 – A rare

astronomical conjunction In astronomy, a conjunction occurs when two astronomical objects or spacecraft have either the same right ascension or the same ecliptic longitude, usually as observed from Earth. When two objects always appear close to the ecliptic—such as two ...

occurs on the

new moon In astronomy, the new moon is the first lunar phase, when the Moon and Sun have the same ecliptic longitude. At this phase, the lunar disk is not visible to the naked eye, except when it is silhouetted against the Sun during a solar eclip ...

including all seven of the traditional

celestial bodies An astronomical object, celestial object, stellar object or heavenly body is a naturally occurring physical entity, association, or structure that exists in the observable universe. In astronomy, the terms ''object'' and ''body'' are often us ...

known from ancient times until the discovery of

Uranus Uranus is the seventh planet from the Sun. Its name is a reference to the Greek god of the sky, Uranus (Caelus), who, according to Greek mythology, was the great-grandfather of Ares (Mars), grandfather of Zeus (Jupiter) and father of Cronu ...

in 1781; this conjunction consists of the Sun and Moon, Mercury,

Venus Venus is the second planet from the Sun. It is sometimes called Earth's "sister" or "twin" planet as it is almost as large and has a similar composition. As an interior planet to Earth, Venus (like Mercury) appears in Earth's sky never f ...

Mars Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, only being larger than Mercury. In the English language, Mars is named for the Roman god of war. Mars is a terrestrial planet with a thin atmos ...

Jupiter Jupiter is the fifth planet from the Sun and the largest in the Solar System. It is a gas giant with a mass more than two and a half times that of all the other planets in the Solar System combined, but slightly less than one-thousandt ...

and

Saturn Saturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter. It is a gas giant with an average radius of about nine and a half times that of Earth. It has only one-eighth the average density of Earth; ...

. * August 10 – Publication of the

M–sigma relation The M–sigma (or ''M''–''σ'') relation is an empirical correlation between the stellar velocity dispersion ''σ'' of a galaxy bulge and the mass M of the supermassive black hole at its center. The ''M''–''σ'' relation was first presented ...

in ''

The Astrophysical Journal ''The Astrophysical Journal'', often abbreviated ''ApJ'' (pronounced "ap jay") in references and speech, is a peer-reviewed scientific journal of astrophysics and astronomy, established in 1895 by American astronomers George Ellery Hale and Ja ...

''.

Biology

* June 26 – 'Rough draft' of the

human genome The human genome is a complete set of nucleic acid sequences for humans, encoded as DNA within the 23 chromosome pairs in cell nuclei and in a small DNA molecule found within individual mitochondria. These are usually treated separately as the ...

is announced jointly by President of the United States

Bill Clinton William Jefferson Clinton (Birth name, né Blythe III; born August 19, 1946) is an American politician who served as the 42nd president of the United States from 1993 to 2001. He previously served as governor of Arkansas from 1979 to 1981 ...

and

British Prime Minister The prime minister of the United Kingdom is the head of government of the United Kingdom. The prime minister advises the sovereign on the exercise of much of the royal prerogative, chairs the Cabinet and selects its ministers. As modern ...

Tony Blair Sir Anthony Charles Lynton Blair (born 6 May 1953) is a British former politician who served as Prime Minister of the United Kingdom from 1997 to 2007 and Leader of the Labour Party from 1994 to 2007. He previously served as Leader of the ...

. * December 14 – The full genome sequence of the flowering plant ''

Arabidopsis thaliana ''Arabidopsis thaliana'', the thale cress, mouse-ear cress or arabidopsis, is a small flowering plant native to Eurasia and Africa. ''A. thaliana'' is considered a weed; it is found along the shoulders of roads and in disturbed land. A winter ...

'' is published in ''

Nature Nature, in the broadest sense, is the physical world or universe. "Nature" can refer to the phenomena of the physical world, and also to life in general. The study of nature is a large, if not the only, part of science. Although humans ar ...

''. * 10-year

Census of Marine Life The Census of Marine Life was a 10-year, US $650 million scientific initiative, involving a global network of researchers in more than 80 nations, engaged to assess and explain the diversity, distribution, and abundance of life in the oceans. T ...

launched.

Computer science

*January 1 –

Year 2000 problem The year 2000 problem, also known as the Y2K problem, Y2K scare, millennium bug, Y2K bug, Y2K glitch, Y2K error, or simply Y2K refers to potential computer errors related to the formatting and storage of calendar data for dates in and after ...

proves to be of little global significance. *March 4 –

Sony Computer Entertainment Sony Interactive Entertainment (SIE), formerly known as Sony Computer Entertainment (SCE), is a multinational video game and digital entertainment company wholly owned by multinational conglomerate Sony. The SIE Group is made up of two legal co ...

releases the PlayStation 2 sixth generation

home video game console A home video game console is a video game console that is designed to be connected to a display device, such as a television, and an external power source as to play video games. Home consoles are generally less powerful and customizable than ...

in Japan. *March 14 –

Stephen King Stephen Edwin King (born September 21, 1947) is an American author of horror, supernatural fiction, suspense, crime, science-fiction, and fantasy novels. Described as the "King of Horror", a play on his surname and a reference to his high ...

horror story Horror is a genre of fiction which is intended to frighten, scare, or disgust. Horror is often divided into the sub-genres of psychological horror and supernatural horror, which is in the realm of speculative fiction. Literary historian J. ...

Riding the Bullet ''Riding the Bullet'' is a horror novella by American writer Stephen King. It marked King's debut on the Internet. Simon & Schuster, with technology by SoftLock, first published ''Riding the Bullet'' in 2000 as the world's first mass-market e-boo ...

'' is published in

e-book An ebook (short for electronic book), also known as an e-book or eBook, is a book publication made available in digital form, consisting of text, images, or both, readable on the flat-panel display of computers or other electronic devices. Al ...

format only, the world's first mass-market electronic book. *September – First system enabling the selection, automatic downloading and storage of serial episodic audio content on PCs and portable devices, origin of the

podcast A podcast is a program made available in digital format for download over the Internet. For example, an episodic series of digital audio or video files that a user can download to a personal device to listen to at a time of their choosing ...

, is launched by early MP3 player manufacturer i2Go.

Earth sciences

*March –

Iceberg B-15 Iceberg B-15 was the largest recorded iceberg by area. It measured around , with a surface area of , about the size of the island of Jamaica. Calved from the Ross Ice Shelf of Antarctica in March 2000, Iceberg B-15 broke up into smaller icebergs, ...

, with a surface area of 11,000 km² (4,200 sq mi), calves from the

Ross Ice Shelf The Ross Ice Shelf is the largest ice shelf of Antarctica (, an area of roughly and about across: about the size of France). It is several hundred metres thick. The nearly vertical ice front to the open sea is more than long, and between h ...

Antarctica Antarctica () is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean, it contains the geographic South Pole. Antarctica is the fifth-largest co ...

. *April –

Cave of the Crystals Cave of the Crystals or Giant Crystal Cave () is a cave A cave or cavern is a natural void in the ground, specifically a space large enough for a human to enter. Caves often form by the weathering of rock and often extend deep underground. ...

discovered at the Naica Mine in Mexico.

Mathematics

* Omer Reingold, Salil Vadhan and

Avi Wigderson Avi Wigderson ( he, אבי ויגדרזון; born 9 September 1956) is an Israeli mathematician and computer scientist. He is the Herbert H. Maass Professor in the school of mathematics at the Institute for Advanced Study in Princeton, New Jerse ...

introduce the

zig-zag product In graph theory, the zig-zag product of regular graphs G,H, denoted by G \circ H, is a binary operation which takes a large graph (G) and a small graph (H) and produces a graph that approximately inherits the size of the large one but the degree o ...

Medicine

*January – Douglas Hanahan and Robert Weinberg publish "

The Hallmarks of Cancer The hallmarks of cancer were originally six biological capabilities acquired during the multistep development of human tumors and have since been increased to eight capabilities and two enabling capabilities. The idea was coined by Douglas Hana ...

". *January 31 –

English English usually refers to: * English language * English people English may also refer to: Peoples, culture, and language * ''English'', an adjective for something of, from, or related to England ** English national id ...

doctor

Harold Shipman Harold Frederick Shipman (14 January 1946 – 13 January 2004), known by the public as Doctor Death and to acquaintances as Fred Shipman, was an English general practitioner and serial killer. He is considered to be one of the most prolif ...

is found guilty of killing fifteen of his elderly patients by lethal injections of

diamorphine Heroin, also known as diacetylmorphine and diamorphine among other names, is a potent opioid mainly used as a recreational drug for its euphoric effects. Medical grade diamorphine is used as a pure hydrochloride salt. Various white and brow ...

, the only British

physician A physician (American English), medical practitioner (Commonwealth English), medical doctor, or simply doctor, is a health professional who practices medicine, which is concerned with promoting, maintaining or restoring health through th ...

ever convicted of murdering his patients; he is actually considered to have killed at least 215.

Paleontology

*First fossil of ''

Orrorin ''Orrorin tugenensis'' is a postulated early species of Homininae, estimated at and discovered in 2000. It is not confirmed how ''Orrorin'' is related to modern humans. Its discovery was used to argue against the hypothesis that australopitheci ...

'', an early species of

Homininae Homininae (), also called "African hominids" or "African apes", is a subfamily of Hominidae. It includes two tribes, with their extant as well as extinct species: 1) the tribe Hominini (with the genus ''Homo'' including modern humans and numer ...

, discovered in the

Tugen Hills The Tugen Hills (also known as ''Saimo'') are a series of hills in Baringo County, Kenya. They are located in the central-western portion of Kenya. The Tugen Hills represent one of the few areas in Africa preserving a succession of deposits from t ...

of Kenya.

Philosophy

Awards

Nobel Prize The Nobel Prizes ( ; sv, Nobelpriset ; no, Nobelprisen ) are five separate prizes that, according to Alfred Nobel's will of 1895, are awarded to "those who, during the preceding year, have conferred the greatest benefit to humankind." Alfre ...

s **

Physics Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge which rel ...

–

Zhores Alferov Zhores Ivanovich Alferov (russian: link=no, Жоре́с Ива́нович Алфёров, ; be, Жарэс Іва́навіч Алфёраў; 15 March 19301 March 2019) was a Soviet and Russian physicist and academic who contributed signific ...

Herbert Kroemer Herbert Kroemer (; born August 25, 1928) is a German-American physicist who, along with Zhores Alferov, received the Nobel Prize in Physics in 2000 for "developing semiconductor heterostructures used in high-speed- and opto-electronics". Kroemer ...

Jack Kilby Jack St. Clair Kilby (November 8, 1923 – June 20, 2005) was an American electrical engineer who took part (along with Robert Noyce of Fairchild) in the realization of the first integrated circuit while working at Texas Instruments (TI) in ...

** Chemistry – Alan J Heeger,

Alan G MacDiarmid Alan Graham MacDiarmid, ONZ FRS (14 April 1927 – 7 February 2007) was a New Zealand-born American chemist, and one of three recipients of the Nobel Prize for Chemistry in 2000. Early life and education MacDiarmid was born in Masterton, New ...

Hideki Shirakawa is a Japanese chemist, engineer, and Professor Emeritus at the University of Tsukuba and Zhejiang University. He is best known for his discovery of conductive polymers. He was co-recipient of the 2000 Nobel Prize in Chemistry jointly with ...

Medicine Medicine is the science and Praxis (process), practice of caring for a patient, managing the diagnosis, prognosis, Preventive medicine, prevention, therapy, treatment, Palliative care, palliation of their injury or disease, and Health promotion ...

–

Arvid Carlsson Arvid Carlsson (25 January 1923 – 29 June 2018) was a Swedish neuropharmacologist who is best known for his work with the neurotransmitter dopamine and its effects in Parkinson's disease. For his work on dopamine, Carlsson was awarded the Nobel ...

Paul Greengard Paul Greengard (December 11, 1925 – April 13, 2019) was an American neuroscientist best known for his work on the molecular and cellular function of neurons. In 2000, Greengard, Arvid Carlsson and Eric Kandel were awarded the Nobel Prize for P ...

Eric R. Kandel Eric Richard Kandel (; born Erich Richard Kandel, November 7, 1929) is an Austrian-born American medical doctor who specialized in psychiatry, a neuroscientist and a professor of biochemistry and biophysics at the College of Physicians and Surge ...

Turing Award The ACM A. M. Turing Award is an annual prize given by the Association for Computing Machinery (ACM) for contributions of lasting and major technical importance to computer science. It is generally recognized as the highest distinction in compu ...

Andrew Yao Andrew Chi-Chih Yao (; born December 24, 1946) is a Chinese computer scientist and computational theorist. He is currently a professor and the dean of Institute for Interdisciplinary Information Sciences (IIIS) at Tsinghua University. Yao us ...

* Wollaston Medal for Geology: William Sefton Fyfe

Deaths

* January 12 – Margaret Hutchinson Rousseau (b.

1910 Events January * January 13 – The first public radio broadcast takes place; live performances of the operas ''Cavalleria rusticana'' and ''Pagliacci'' are sent out over the airwaves, from the Metropolitan Opera House in New York Ci ...

), American chemical engineer * January 19 –

G. Ledyard Stebbins George Ledyard Stebbins Jr. (January 6, 1906 – January 19, 2000) was an American botanist and geneticist who is widely regarded as one of the leading evolutionary biologists of the 20th century. Stebbins received his Ph.D. in botany from Ha ...

(b.

1906 Events January–February * January 12 – Persian Constitutional Revolution: A nationalistic coalition of merchants, religious leaders and intellectuals in Persia forces the shah Mozaffar ad-Din Shah Qajar to grant a constitution, a ...

), American botanist and

geneticist A geneticist is a biologist or physician who studies genetics, the science of genes, heredity, and variation of organisms. A geneticist can be employed as a scientist or a lecturer. Geneticists may perform general research on genetic processes ...

* March 7 –

W. D. Hamilton William Donald Hamilton (1 August 1936 – 7 March 2000) was a British evolutionary biologist, recognised as one of the most significant evolutionary theorists of the 20th century. Hamilton became known for his theoretical work expounding a ...

(b.

1936 Events January–February * January 20 – George V of the United Kingdom and the British Dominions and Emperor of India, dies at his Sandringham Estate. The Prince of Wales succeeds to the throne of the United Kingdom as King E ...

evolutionary biologist Evolutionary biology is the subfield of biology that studies the evolutionary processes (natural selection, common descent, speciation) that produced the diversity of life on Earth. It is also defined as the study of the history of life fo ...

, widely recognised as one of the greatest

evolution Evolution is change in the heritable characteristics of biological populations over successive generations. These characteristics are the expressions of genes, which are passed on from parent to offspring during reproduction. Variation ...

ary theorists of the 20th century * March 10 –

Nim Chimpsky Neam "Nim" Chimpsky (November 19, 1973 – March 10, 2000) was a chimpanzee and the subject of an extended study of animal language acquisition at Columbia University. The project was led by Herbert S. Terrace with the linguistic analysis heade ...

(b.

1973 Events January * January 1 - The United Kingdom, the Republic of Ireland and Denmark 1973 enlargement of the European Communities, enter the European Economic Community, which later becomes the European Union. * January 15 – Vietnam War: ...

), chimpanzee * May 6 –

John Clive Ward John Clive Ward, (1 August 1924 – 6 May 2000) was a British-Australian physicist. He introduced the Ward–Takahashi identity, also known as "Ward Identity" (or "Ward's Identities"). Andrei Sakharov said Ward was one of the titans of ...

(b.

1924 Events January * January 12 – Gopinath Saha shoots Ernest Day, whom he has mistaken for Sir Charles Tegart, the police commissioner of Calcutta, and is arrested soon after. * January 20– 30 – Kuomintang in China h ...

), English-born

physicist A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate ca ...

* May 19 –

Yevgeny Khrunov Yevgeny Vasilyevich Khrunov (; 10 September 1933 – 20 May 2000) was a Soviet cosmonaut who flew on the Soyuz 5/ Soyuz 4 mission. Early life Yevgeny Khrunov was born on 10 September 1933 to Vasily Yegorevich and Agrafena Nikolayevna. Nicknam ...

(b.

1933 Events January * January 11 – Sir Charles Kingsford Smith makes the first commercial flight between Australia and New Zealand. * January 17 – The United States Congress votes in favour of Philippines independence, against the wis ...

cosmonaut An astronaut (from the Ancient Greek (), meaning 'star', and (), meaning 'sailor') is a person trained, equipped, and deployed by a human spaceflight program to serve as a commander or crew member aboard a spacecraft. Although generally r ...

* June 14 –

Elsie Widdowson Elsie Widdowson (21 October 1906 – 14 June 2000), was a British dietitian and nutritionist. She and Dr Robert McCance, a pediatrician, physiologist, biochemist, and nutritionist, were responsible for overseeing the government-mandated additi ...

(b.

1908 Events January * January 1 – The British ''Nimrod'' Expedition led by Ernest Shackleton sets sail from New Zealand on the ''Nimrod'' for Antarctica. * January 3 – A total solar eclipse is visible in the Pacific Ocean, and is the 4 ...

), English

nutritionist A nutritionist is a person who advises others on matters of food and nutrition and their impacts on health. Some people specialize in particular areas, such as sports nutrition, public health, or animal nutrition, among other disciplines. In many ...

* July 8 –

W. David Kingery William David Kingery (July 27, 1926 – June 30, 2000) was an American material scientist who developed systematic methods for the study of ceramics. For his work, he was awarded the Kyoto Prize in 1999. Life Kingery was born on July 27, ...

(b.

1926 Events January * January 3 – Theodoros Pangalos (general), Theodoros Pangalos declares himself dictator in Greece. * January 8 **Abdul-Aziz ibn Saud is crowned King of Kingdom of Hejaz, Hejaz. ** Bảo Đại, Crown Prince Nguyễn P ...

), American materials scientist specializing in

ceramic materials A ceramic is any of the various hard, brittle, heat-resistant and corrosion-resistant materials made by shaping and then firing an inorganic, nonmetallic material, such as clay, at a high temperature. Common examples are earthenware, porcelain ...

* July 14 – Sir

Mark Oliphant Sir Marcus Laurence Elwin Oliphant, (8 October 1901 – 14 July 2000) was an Australian physicist and humanitarian who played an important role in the first experimental demonstration of nuclear fusion and in the development of nuclear weapon ...

(b.

1901 Events January * January 1 – The British colonies of New South Wales, Queensland, South Australia, Tasmania, Victoria and Western Australia federate as the Commonwealth of Australia; Edmund Barton becomes the first Prime Min ...

), Australian nuclear physicist * July 29 –

René Favaloro René Gerónimo Favaloro (July 12, 1923 – July 29, 2000) was an Argentine cardiac surgeon and educator best known for his pioneering work on coronary artery bypass surgery using the great saphenous vein. Early life Favaloro was born in ...

(b.

1923 Events January–February * January 9 – Lithuania begins the Klaipėda Revolt to annex the Klaipėda Region (Memel Territory). * January 11 – Despite strong British protests, troops from France and Belgium occupy the Ruhr area, ...

), Argentine cardiac surgeon * September 20 –

Gherman Titov Gherman Stepanovich Titov (russian: Герман Степанович Титов; 11 September 1935 – 20 September 2000) was a Soviet cosmonaut who, on 6 August 1961, became the second human to orbit the Earth, aboard Vostok 2, preceded by Yu ...

(b.

1935 Events January * January 7 – Italian premier Benito Mussolini and French Foreign Minister Pierre Laval conclude an agreement, in which each power agrees not to oppose the other's colonial claims. * January 12 – Amelia Earhart bec ...

), cosmonaut * October 4 – Michael Smith (b. 1932), English-born Canadian chemist, 1993 Nobel Prize winner * November 20 – Nikolay Dollezhal (b.

1899 Events January 1899 * January 1 ** Spanish rule ends in Cuba, concluding 400 years of the Spanish Empire in the Americas. ** Queens and Staten Island become administratively part of New York City. * January 2 – **Bolivia sets up a ...

), a key figure in Soviet atomic bomb project and chief designer of nuclear reactors

References

{{DEFAULTSORT:2000 In Science 20th century in science 2000s in science