Salk's Polio Vaccine Becomes Obsolete
In a report from the Voice of America at the 1959 International Scientific Congress at Georgetown University, Dr. Albert Sabin discusses the live poliovirus vaccine he developed and compares it to the inactivated, or “killed,” vaccine first developed by Dr. Jonas Salk seven years earlier.
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Salk's Polio Vaccine Becomes Obsolete
Salk's Polio Vaccine Becomes ObsoleteAudio Clip (2:35)
Audio Clip (2:35)
In a report from the Voice of America at the 1959 International Scientific Congress at Georgetown University, Dr. Albert Sabin discusses the live poliovirus vaccine he developed and compares it to the inactivated, or “killed,” vaccine first developed by Dr. Jonas Salk seven years earlier.
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Study Shows Hope for Combating Viruses
Study Shows Hope for Combating VirusesAudio Clip (5:49)
Audio Clip (5:49)
A 1965 weekly Voice of America science report discusses a new study on interferon, a natural substance produced in the body that defends cells against viruses. Researchers at the National Institutes of Health are experimenting with ways to trigger the production of interferon in order to treat and prevent disease.
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30 Years of AIDS Research
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The spring 2009 outbreak of H1N1, more commonly known as swine flu, in Mexico and the western United States put public health officials on alert. In an April 24, 2009, broadcast, Dr. Richard Besser from the Centers for Disease Control and Prevention expresses concern that the virus could lead to a worldwide pandemic.
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World's First Cloned Sheep
World's First Cloned SheepAudio Clip (0:16)
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On February 22, 1997, scientists in Scotland announce the creation of the world's first mammal to have been successfully cloned from an adult cell. Alan Colman, one of the scientists involved, describes the genetic makeup of Dolly the sheep, whose birth on July 5, 1996, had been kept a secret for almost eight months.
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First Artificial Heart Recipient
First Artificial Heart RecipientAudio Clip (0:29)
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In 1982, Seattle dentist Barney Clark became the first human to receive a permanent artificial heart, a device known as the Jarvik 7. In an interview shortly after the implantation of the pump, Clark expresses his desire to help advance science. He survived for 112 days on the mechanical organ.
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Viking 1 Lands on Mars
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On July 20, 1976, NASA's Viking 1 becomes the first spacecraft to send back detailed pictures from the surface of Mars. A NASA control room recording captures the excitement of the moment.
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Eisenhower on the Salk Polio Vaccine
Eisenhower on the Salk Polio VaccineAudio Clip (2:44)
Audio Clip (2:44)
Two years after American medical researcher Jonas Salk reported that he had successfully tested a vaccine against poliomyelitis, polio vaccinations were still not widely available in the United States. To assuage the public's concerns, President Eisenhower holds a press conference on May 4, 1955, and explains the need for further testing.
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Pluto Loses Planet Status
Pluto Loses Planet StatusAudio Clip (0:13)
Audio Clip (0:13)
On August 24, 2006, the International Astronomical Union voted to reclassify Pluto as a "dwarf planet," shrinking the solar system from nine planets to eight and setting off a controversy within the scientific community. In a broadcast following the announcement, James Zimbelman from the Smithsonian Institution shares his opinion about the "oddball" of outer space.
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Radio Astronomy Points to Extraterrestrial Life
Radio Astronomy Points to Extraterrestrial LifeAudio Clip (4:21)
Audio Clip (4:21)
In a 1960 broadcast, a Voice of America reporter interviews Dr. Campbell Wade of the National Radio Astronomical Observatory about his discoveries analyzing radio waves to see 1 billion light years into space and about the possibility of life on other planets.
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Written in Bone: William Whites Family Tree
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Doug Owsley and his forensics team look for a mitochondrial DNA match to a body found at a construction site in Washington D.C. In this video clip from Save Our History: Written In Bone the body, a 15 year old Caucasian boy, could be William White.
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Timothy Leary Advocates LSD
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Chart the progress of the ice ages throughout Earth's history, from the planet’s original icy state millions of years ago to the more recent ice ages.
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Written in Bone: Kennewick Man
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