World's First Cloned Sheep
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.
Related Speeches & Audio (10)
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World's First Cloned Sheep
World's First Cloned SheepAudio Clip (0:16)
Audio Clip (0:16)
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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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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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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30 Years of AIDS Research
30 Years of AIDS ResearchAudio Clip (0:32)
Audio Clip (0:32)
A June 17, 2011, broadcast from the National Institutes of Health describes the many obstacles doctors still face in treating AIDS 30 years after the first reported case.
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Monkeys Travel to Space
Monkeys Travel to SpaceAudio Clip (2:00)
Audio Clip (2:00)
On May 28, 1959, in an experiment that would lead the way to manned space flight, the United States launched two monkeys to an altitude of 300 miles. A Voice of America news report details the travels of the two primates who survived the space flight and were the first in history to return safely to Earth.
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Swine Flu Pandemic of 2009 Causes Concern
Swine Flu Pandemic of 2009 Causes ConcernAudio Clip (0:14)
Audio Clip (0:14)
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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First American Woman in Space
First American Woman in SpaceAudio Clip (0:50)
Audio Clip (0:50)
Sally Ride becomes the first American woman in space when the shuttle Challenger takes off on June 18, 1983. The historical moment is noted in communication just after liftoff.
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First Space Shuttle Launched
First Space Shuttle LaunchedAudio Clip (3:00)
Audio Clip (3:00)
On April 12, 1981, NASA launched the world's first reusable manned spacecraft. In the minutes before takeoff, Kennedy Space Center launch control communicates with astronauts John Young and Robert Crippen as they prepare to take Columbia on its first test flight into space and back.
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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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Voyager Spacecraft 30 Years Later
Voyager Spacecraft 30 Years LaterAudio Clip (1:12)
Audio Clip (1:12)
As the twin Voyager spacecraft prepare to embark on an extended mission to explore interstellar space in 2006, project scientist Ed Stone of California Institute of Technology recaps the major discoveries the Voyagers have made since their launch in 1977.
Related Videos (10)
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Written in Bone: William Whites Family Tree
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Video Clip (2:09)
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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Mankind in 2 Minutes
Mankind in 2 MinutesVideo Clip (2:12)
Video Clip (2:12)
Experience the story of Mankind in 2 Minutes.
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Mankind Decoded Sneak Peek
Mankind Decoded Sneak PeekVideo Clip (5:03)
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Check out a sneak peek of the upcoming series Mankind Decoded.
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How the Earth Was Made: America's Ice Age
How the Earth Was Made: America's Ice AgeVideo Clip (44:12)
Video Clip (44:12)
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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Evolve: Eyes
Evolve: EyesVideo Clip (3:07)
Video Clip (3:07)
Whether for tracking prey or evading predators, eyes are one of evolution's most vital innovations.
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Written in Bone: Kennewick Man
Written in Bone: Kennewick ManVideo Clip (2:28)
Video Clip (2:28)
After the discovery of the Kennewick man, our understanding of the history of Native Americans has changed. From the History Channel TV series Save Our History, we hear that history books of ten years ago are not completely true.
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Mega Sharks
Mega SharksVideo Clip (1:16)
Video Clip (1:16)
A massive prehistoric shark may be hiding in North American waters.
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Planet Earth
Planet EarthVideo Clip (2:56)
Video Clip (2:56)
Over billions of years, Earth has developed essential properties that allowed living organisms to form.
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Beyond the Big Bang: Sir Isaac Newton's Law of Gravity
Beyond the Big Bang: Sir Isaac Newton's Law of GravityVideo Clip (4:38)
Video Clip (4:38)
In this History Channel video clip on Isaac Newton, we learn a lot about the scientist who is said to be the smartest one to have ever lived. Learn a bit about gravity and Newton's analysis on the moon. His laws explain almost everything.
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Hutton's Discovery
Hutton's DiscoveryVideo Clip (2:32)
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Just over 200 years ago, a Scottish farmer discovered the key to determining the age of the Earth.
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