Top 10 Science Popularizers

Astronomer, educator and author Carl Sagan was perhaps the world's greatest popularizer of science, reaching millions of people through newspapers, magazines and television broadcasts. He is well-known for his work on the PBS series Cosmos (1980), the Emmy Award and Peabody Award-winning show that became the most watched series in public-television history. This was seen by more than 500 million people in 60 countries. The accompanying book, "Cosmos" (1980), was on the New York Times bestseller list for 70 weeks and was the best-selling science book ever published in English.

Carl Edward Sagan was born November 9, 1934, in Brooklyn, New York. Having taught at Cornell University since 1968, Sagan received a bachelor's degree (1955) and a master's degree (1956), both in physics, and a doctorate in astronomy and astrophysics (1960), all from the University of Chicago. He taught at Harvard University in the early 1960s before coming to Cornell, where he became a full professor in 1971. Sagan played a leading role in NASA's Mariner, Viking, Voyager and Galileo expeditions to other planets. He received NASA Medals for Exceptional Scientific Achievement and twice for Distinguished Public Service and the NASA Apollo Achievement Award. His research focused on topics such as the greenhouse effect on Venus; windblown dust as an explanation for the seasonal changes on Mars; organic aerosols on Titan, Saturn's moon; the long-term environmental consequences of nuclear war; and the origin of life on Earth. A pioneer in the field of exobiology, he continued to teach graduate and undergraduate students in courses in astronomy and space sciences and in critical thinking at Cornell.

The breadth of his interests were made evident in October 1994, at a Cornell-sponsored symposium in honor of Sagan's 60th birthday. The two-day event featured speakers in areas of planetary exploration, life in the cosmos, science education, public policy and government regulation of science and the environment -- all fields in which Sagan had worked or had a strong interest. Sagan was the recipient of numerous awards in addition to his NASA recognition. He received 22 honorary degrees from American colleges and universities for his contributions to science, literature, education and the preservation of the environment and many awards for his work on the long-term consequences of nuclear war and reversing the nuclear arms race. Among his other awards were: the John F. Kennedy Astronautics Award of the American Astronautical Society; the Explorers Club 75th Anniversary Award; the Konstantin Tsiolkovsky Medal of the Soviet Cosmonauts Federation and the Masursky Award of the American Astronomical Society. He also was the recipient of the Public Welfare Medal, the highest award of the National Academy of Sciences, "for distinguished contributions in the application of science to the public welfare".

Sagan was elected chairman of the Division of Planetary Sciences of the American Astronomical Society, president of the Planetology Section of the American Geophysical Union and chairman of the Astronomy Section of the American Association for the Advancement of Science. For 12 years, he was editor of Icarus, the leading professional journal devoted to planetary research. He was co-founder of the Planetary Society, a 100,000-member organization and the largest space-interest group in the world. The society supports major research programs in the radio search for extraterrestrial intelligence, the investigation of near-Earth asteroids and, with the French and Russian space agencies, the development and testing of balloon and mobile robotic exploration of Mars. Sagan also was Distinguished Visiting Scientist at the Jet Propulsion Laboratory in California and was contributing editor of Parade magazine, where he published many articles about science and about the disease that he battled for the last two years of his life.

On December 20, 1996, Carl Sagan died at age 62 of pneumonia at the Fred Hutchinson Cancer Research Center in Seattle, Washington. He was buried at Lakeview Cemetery in Ithaca, Tompkins County, New York.

Stephen William Hawking was born on 8 January 1942 on Oxford, Oxfordshire, England. He was an English theoretical physicist, cosmologist, author and Director of Research at the Centre for Theoretical Cosmology within the University of Cambridge.

His scientific works include a collaboration with Roger Penrose on gravitational singularity theorems in the framework of general relativity and the theoretical prediction that black holes emit radiation, often called Hawking radiation. Hawking was the first to set out a theory of cosmology explained by a union of the general theory of relativity and quantum mechanics. He was a vigorous supporter of the many-worlds interpretation of quantum mechanics.

Hawking was an Honorary Fellow of the Royal Society of Arts (FRSA), a lifetime member of the Pontifical Academy of Sciences, and a recipient of the Presidential Medal of Freedom, the highest civilian award in the United States. In 2002, Hawking was ranked number 25 in the BBC's poll of the 100 Greatest Britons. He was the Lucasian Professor of Mathematics at the University of Cambridge between 1979 and 2009 and achieved commercial success with works of popular science in which he discusses his own theories and cosmology in general; his book "A Brief History of Time" appeared on the British Sunday Times best-seller list for a record-breaking 237 weeks.

At the release party for the home video version of A Brief History of Time (1991), Leonard Nimoy, who had played Spock on Star Trek (1966), learned that Hawking was interested in appearing on the series. Nimoy made the necessary contact, and Hawking played a holographic simulation of himself in an episode of Star Trek: The Next Generation (1987) in 1993. The same year, his synthesizer voice was recorded for the song "Keep Talking" by the rock band Pink Floyd, and in 1999 for an appearance on The Simpsons (1989). Hawking also guest-starred on Futurama (1999) and The Big Bang Theory (2007).

Hawking allowed the use of his copyrighted voice in the biographical drama The Theory of Everything (2014), in which he was portrayed by Eddie Redmayne in an Academy Award-winning role. Hawking died at age 76 in his home in Cambridge, Cambridgeshire, England, early in the morning of 14 March 2018.

Isaac Asimov was born Isaak Judah Ozimov, on January 2, 1920, in Petrovichi shtetl, near Smolensk, Russia. He was the oldest of three children. His father, named Judah Ozimov, and his mother, named Anna Rachel Ozimov (nee Berman), were Orthodox Jews. Ozimov family were millers (the name Ozimov comes from the eponymous sort of wheat in Russian). In 1923 Isaac with his parents immigrated to the USA and settled in Brooklyn, New York. There his parents temporarily changed his birthday to September 7, 1919, in order to send him to school a year earlier. Their family name was changed from Ozimov to Asimov.

Asimov was an avid reader before the age of 5. He spoke Yiddish and English at home with his parents and spoke only a few word in Russian. He began his formal education in 1925 in the New York Public School system. From 1930-1932 he was placed in the rapid advance course. In 1935 he graduated from high school, in 1939 received a B.S. and in 1941 he earned his M. Sc. in Chemistry from Columbia University. From 1942-1945 Asimov was a chemist at the Philadelphia Naval Shipyard's Naval Air experimental station. After the war ended, he was drafted into the U.S. Army and was transfered to the island of Oahu and was destined to participate in the atomic bomb tests at Bikini Atoll in July 1946. He narrowly avoided that by receiving an honorable discharge in May 1946. In 1948 he completed his post-graduate studies and earned his Ph. D. in Chemistry. In 1949 he began his teaching career at the Medical School of Boston University, becoming assistant professor in 1951, and associate professor in 1955. In 1958 Asimov became a full-time writer and gave up his teaching duties because his income from his literary works was much greater than his professor's salary. He was fired, but he retained his title and later returned as a lecturer and was promoted to the rank of full professor in 1979. Asimov was considered one of the best lecturers at Boston University.

Young Isaac Asimov was raised as a non-religious person. His parents observed the Orthodox Judaism, but did not force their belief upon young Asimov. He did not have affiliation with a temple, did not have a bar mizvah and called himself an atheist, then used the term "humanist" in his later life. He did not oppose genuine religious convictions in others but opposed superstitious or unfounded beliefs. Asimov defined his intellectual position as a Humanist and rationalist. He opposed the Vietnam war in the 1960s and was a supporter of the Democratic party. He embraced environmental issues, and supported feminism, joking that he wished women to be free "because I hate it when they charge". He was also humorous about many of his memberships in various clubs and foundations. Asimov did not approve exclusionary societies, he left Mensa after he found that many of the members were arrogant. He liked individuality and stayed in groups where he enjoyed giving speeches. As a free thinker, Asimov saw sci-fi literature serving as a pool where ideas and hypotheses are expressed with unrestricted intellectual freedom.

Young Asimov was fascinated with science fiction magazines which were sold at his parent's general store. Around the age of 11 he wrote eight chapters of a fiction about adventures of young boys in a small town. His first publication was "Marooned Off Vesta" in the Amazing Stories magazine in 1939. Asimov shot to fame in 1941 with 'Nightfall', a story of a planet where night comes once every 2049 years. 'Nightfall' has been described as one of the best science fiction stories ever written. Asimov wrote over five hundred literary works. He is credited for introducing the words "positronic", "psychohistory", and "robotics" into the English language. He penned such classics as "I, Robot" and the "Foundation" series, which are considered to be the most impressive of his writings. He also founded "Isaac Asimov's Science Fiction Magazine", which became a best-selling publication.

Asimov was afraid of needles and the sight of blood. Although he had the highest score on the intelligence test he had the lowest score on the physical-conditioning test. He never learned how to swim or ride a bicycle. The author who described spaceflights suffered from fear of flying. In his entire life he had to fly only twice during his military service. Acrophobia was revealed when he took his date and first love on a roller coaster in 1940, and was terrified. This phobia complicated the logistics and limited the range over which he traveled; it also found reflection in some of his literary works. He avoided traveling long distances. Instead he enjoyed cruise ships like the RMS Queen Elizabeth 2, where he occasionally entertained passengers with his science-themed talks. He impressed public with his highly entertaining speeches as well as with his sharp sense of timing; he never looked at the clock, but he spoke for precisely the time allocated. Asimov's sense of time prevented him from ever being late to a meeting. Once he discovered that his parents changed his date of birth, he insisted that the official records of his birthday be corrected to January 2, 1920, the date he personally celebrated throughout his life.

Asimov met Gertrude Blugherman on a blind date on Valentine's Day in February of 1942, they got married in July of the same year. The Asimovs had two children, son David (born in 1951), and daughter Robyn Joan (born in 1955). Asimov had known Janet Opal Jeppson since 1959. She was a psychoanalyst and also a writer of science fiction for children. Correspondence with her convinced Asimov that she was the right kind of person for him. He and Gertrude were separated in 1970, and he moved in with Janet Jappeson almost at once. His first marriage ended in divorce in 1973. That same year he and Janet Jeppson were married at Janet's home by an official of Ethical Culture Society. Asimov had no children by his second marriage.

In 1983 Asimov contracted HIV infection from a tainted blood transfusion received during a triple bypass surgery. He eventually developed AIDS and wanted to go public about his AIDS but his doctors convinced Asimov to remain silent. The specific cause of death was heart and renal failure as complications of AIDS. He died on April 6, 1992, in Boston, Massachussets, and was cremated. His ashes were scattered.

Ten years after Asimov's death, his widow, Janet Jeppson Asimov, revealed that his death was a consequence of an unfortunately contracted AIDS.

Bill Nye was born on 27 November 1955 in Washington, District of Columbia, USA. He is an actor and writer, known for Bill Nye the Science Guy (1993), Flubber (1997) and Stargate: Atlantis (2004). He has been married to Liza Mundy since 22 June 2022. He was previously married to Blair Tindall.

Born 8 May 1926, the younger brother of actor Lord Richard Attenborough. He never expressed a wish to act and, instead, studied Natural Sciences at Cambridge University, graduating in 1947, the year he began his two years National Service in the Royal Navy. In 1952, he joined BBC Television at Alexandra Palace and, in 1954, began his famous "Zoo Quest" series. When not "Zoo Questing", he presented political broadcasts, archaeological quizzes, short stories, gardening and religious programmes.

1964 saw the start of BBC2, Britain's third TV channel, with Michael Peacock as its Controller. A year later, Peacock was promoted to BBC1 and Attenborough became Controller of BBC2. As such, he was responsible for the introduction of colour television into Britain, and also for bringing Monty Python's Flying Circus (1969) to the world.

In 1969, he was appointed Director of Programmes with editorial responsibility for both the BBC's television networks. Eight years behind a desk was too much for him, and he resigned in 1973 to return to programme making. First came "Eastwards with Attenborough", a natural history series set in South East Asia, then The Tribal Eye (1975) , examining tribal art. In 1979, he wrote and presented all 13 parts of Life on Earth (1979) (then the most ambitious series ever produced by the BBC Natural History Unit). This became a trilogy, with The Living Planet (1984) and The Trials of Life (1990).

His services to television were recognised in 1985, and he was knighted to become Sir David Attenborough. The two shorter series, "The First Eden" and "Lost Worlds, Vanished Lives" were fitted around 1993's spectacular Life in the Freezer (1993), a celebration of Antarctica and 1995's epic The Private Life of Plants (1995), which he wrote and presented. Filming the beautiful birds of paradise for Attenborough in Paradise (1996) in 1996 fulfilled a lifelong ambition, putting him near his favourite bird. Entering his seventies, he narrated the award-winning Wildlife Specials (1995), marking 40 years of the BBC Natural History Unit. But, he was not slowing down, as he completed the epic 10-part series for the BBC, The Life of Birds (1998) along with writing and presenting the three-part series State of the Planet (2000) as well as The Life of Mammals (2002). Once broadcast, he began planning his next projects.

He has received honorary degrees from many universities across the world, and is patron or supporter of many charitable organisations, including acting as Patron of the World Land Trust, which buys rain forest and other lands to preserve them and the animals that live there.

Expert in science fiction, futurist, bestselling author, acclaimed on-air personality, and popularizer of theoretical physics.

Dr. Kaku has starred in science programming for television including series for Discovery, Science Channel, BBC, ABC, and History Channel. Beyond his numerous New York Times bestselling books, he has also been a featured columnist for top science publications such as Popular Mechanics, Discover, Cosmos, WIRED, New Scientist, Newsweek, Wall Street Journal, Variety, Vanity Fair, and many others.

Kaku is a news contributor to several news organizations including CBS, CBSN, FOX News, CNN, and CNBC, also appearing on ABC, FOX Business, and RT. Dr. Kaku has made guest appearances on all major talk shows including The Daily Show, The Colbert Report, The Late Show, The Tonight Show, and Conan. He was profiled in the award-winning documentary film, "Me & Isaac Newton" by Michael Apted.

Kaku has also appeared in commercial media for Toyota, Samsung, TurboTax, Coca-Cola, and others.

Brian Cox was born on 3 March 1968 in Oldham, Lancashire, England, UK. He is an actor and writer, known for Sunshine (2007), The Last Star and Absolutely Anything (2015). He has been married to Gia Milinovich since 2003. They have one child.

Paul Zaloom was born on 14 December 1951 in Brooklyn, New York, USA. He is an actor and writer, known for Beakman's World (1992), Dante's Inferno (2007) and The Equalizer (1985).

Chris Hadfield was born on 29 August 1959 in Sarnia, Ontario, Canada. He is an actor and writer, known for Atop the Fourth Wall (2008), Trailer Park Boys: Out of the Park (2016) and Playing Space with Bubbles (2014). He has been married to Helene Walter since 23 December 1981. They have three children.

Neil deGrasse Tyson is an American astrophysicist, cosmologist, author, and science communicator.

Born and raised in New York City, Tyson became interested in astronomy at the age of nine after a visit to the Hayden Planetarium. After graduating from the Bronx High School of Science, where he was editor-in-chief of the Physical Science Journal, he completed a bachelor's degree in physics at Harvard University in 1980. After receiving a master's degree in astronomy at the University of Texas at Austin in 1983, he earned his master's (1989) and doctorate (1991) in astrophysics at Columbia University. For the next three years, he was a postdoctoral research associate at Princeton University. In 1994 he joined the Hayden Planetarium as a staff scientist and the Princeton faculty as a visiting research scientist and lecturer. In 1996, he became director of the planetarium and oversaw its $210-million reconstruction project, which was completed in 2000.

From 1995 to 2005, Tyson wrote monthly essays in the "Universe" column for Natural History magazine, some of which were published in his book Death by Black Hole (2007). During the same period, he wrote a monthly column in Star Date magazine, answering questions about the universe under the pen name "Merlin". Material from the column appeared in his books Merlin's Tour of the Universe (1998) and Just Visiting This Planet (1998). Tyson served on a 2001 government commission on the future of the U.S. aerospace industry, and on the 2004 Moon, Mars and Beyond commission. He was awarded the NASA Distinguished Public Service Medal in the same year.

In 2014, he hosted the television series Cosmos: A Spacetime Odyssey, a successor to Carl Sagan's 1980 series Cosmos: A Personal Voyage.

As a science communicator, Tyson regularly appears on television, radio, and various other media outlets.