Margaret Mead Speaks at First Earth Day
On April 22, 1970, noted anthropologist and outspoken environmentalist Margaret Mead inaugurates the first Earth Day, an event to increase public awareness of the world's environmental problems.
Related Speeches & Audio (7)
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Margaret Mead Speaks at First Earth Day
Margaret Mead Speaks at First Earth DayAudio Clip (0:42)
Audio Clip (0:42)
On April 22, 1970, noted anthropologist and outspoken environmentalist Margaret Mead inaugurates the first Earth Day, an event to increase public awareness of the world's environmental problems.
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Ozone Hole Recovery
Ozone Hole RecoveryAudio Clip (0:26)
Audio Clip (0:26)
A 1986 study of the South Pole determined the cause of a hole in the ozone layer and led to an international treaty banning the production of chlorofluorocarbons (CFCs). Twenty years later, in an August 23, 2006, report, a scientist from the original expedition discusses the ozone’s slow recovery.
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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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BP CEO Denies Responsibility for Deepwater Horizon Oil Spill
BP CEO Denies Responsibility for Deepwater Horizon Oil SpillAudio Clip (0:22)
Audio Clip (0:22)
On April 20, 2010, an explosion on the Deepwater Horizon drilling platform, located off the coast of Louisiana and under lease to British Petroleum (BP), resulted in the worst oil spill in U.S. history. In a May 3, 2010, interview, BP CEO Tony Hayward places blame for the accident on the owner of the drilling platform, although he promises that BP will clean up the mess.
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Iceland Volcano Erupts
Iceland Volcano EruptsAudio Clip (0:19)
Audio Clip (0:19)
When the Icelandic volcano Eyjafjallajökul erupted on April 14, 2010, it produced a large cloud of steam and volcanic ash that grounded air traffic in Northern Europe for several days. A news report following the eruption describes the resulting air travel chaos.
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Exxon Valdez Oil Spill 20 Years Later
Exxon Valdez Oil Spill 20 Years LaterAudio Clip (0:40)
Audio Clip (0:40)
On March 24, 1989, the oil tanker Exxon Valdez ran aground on an undersea reef, spilling an estimated 11 million gallons of crude oil into Alaska’s Prince William Sound. Twenty years later, the National Oceanic and Atmospheric Administration, which was involved in the initial cleanup, reports on the area's recovery.
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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.
Related Videos (4)
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Exxon Valdez Oil Spill
Exxon Valdez Oil SpillVideo Clip (3:38)
Video Clip (3:38)
Shortly after midnight on March 24, 1989, the oil tanker Exxon Valdez struck Bligh Reef just off the coast of Alaska, dumping more than 11 million gallons of crude oil into the pristine environment.
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Climate Change and Evolution
Climate Change and EvolutionVideo Clip (2:41)
Video Clip (2:41)
A look at how a period of climate change millions of years ago impacted evolution.
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Global Warming: Looking for Proof
Global Warming: Looking for ProofVideo Clip (2:42)
Video Clip (2:42)
Researchers investigate Kilimanjaro and the Andes looking for evidence of Global Warming.
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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.
Related Photo Galleries (1)
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Women in Science and Health
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