Archeological Dig Area in the American State of South Carolina Continues To Surrender Secrets of Early Peoples
The Topper Site shows that humans may have occupied the Americas much earlier than once believed. Transcript of radio broadcast:
01 September 2008
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VOICE ONE:
This is SCIENCE IN THE NEWS in VOA Special English. I'm Bob Doughty.
VOICE TWO:
Northern Lights seen near Palmer, Alaska last year
And I'm Barbara Klein. On our program this week, we will tell about the mystery of the aurora borealis, better known as the Northern Lights. We will also tell about an archeological dig in the southeastern United States. The project continues to surrender secrets of some very early Americans.
(MUSIC)
VOICE ONE:
For many centuries, people have looked with wonder at the Northern Lights. These mysterious lights often brighten the night sky in countries near the North Pole. The Northern Lights are also called the aurora borealis. An aurora is a natural burst of light that can be seen with the unaided eye. An aurora over the South Pole is called the aurora australis, or Southern Lights.
Auroras appear as large areas of moving light. They are often green, red or purple in color. Some auroras can extend across the sky for thousands of kilometers.
VOICE TWO:
Scientists have long known that auroras are caused by a storm of magnetic energy high above the Earth's surface. But scientists have been debating exactly what forces in nature cause these storms to create the colorful lightshows.
Recently, researchers working for the American space agency said they found the answer by using five of the agency's satellites. The researchers say the Sun's and Earth's electromagnetic fields normally move past one another in different directions. But when enough energy builds between the two fields, they separate and reconnect themselves in a new shape.
This reconnection releases a huge amount of electrical current in the Earth's magnetosphere. The researchers say the reconnection happens about one hundred twenty-nine kilometers away from the planet. That is about one third of the distance to the moon.
The Topper Site shows that humans may have occupied the Americas much earlier than once believed. Transcript of radio broadcast:
01 September 2008
MP3 - Download (MP3)
MP3 - Listen to (MP3)
RealAudio - Download
VOICE ONE:
This is SCIENCE IN THE NEWS in VOA Special English. I'm Bob Doughty.
VOICE TWO:
Northern Lights seen near Palmer, Alaska last year
And I'm Barbara Klein. On our program this week, we will tell about the mystery of the aurora borealis, better known as the Northern Lights. We will also tell about an archeological dig in the southeastern United States. The project continues to surrender secrets of some very early Americans.
(MUSIC)
VOICE ONE:
For many centuries, people have looked with wonder at the Northern Lights. These mysterious lights often brighten the night sky in countries near the North Pole. The Northern Lights are also called the aurora borealis. An aurora is a natural burst of light that can be seen with the unaided eye. An aurora over the South Pole is called the aurora australis, or Southern Lights.
Auroras appear as large areas of moving light. They are often green, red or purple in color. Some auroras can extend across the sky for thousands of kilometers.
VOICE TWO:
Scientists have long known that auroras are caused by a storm of magnetic energy high above the Earth's surface. But scientists have been debating exactly what forces in nature cause these storms to create the colorful lightshows.
Recently, researchers working for the American space agency said they found the answer by using five of the agency's satellites. The researchers say the Sun's and Earth's electromagnetic fields normally move past one another in different directions. But when enough energy builds between the two fields, they separate and reconnect themselves in a new shape.
This reconnection releases a huge amount of electrical current in the Earth's magnetosphere. The researchers say the reconnection happens about one hundred twenty-nine kilometers away from the planet. That is about one third of the distance to the moon.











