Migration has been a huge part of human history. Experts agree that early humans started out in Africa and began to migrate out of Africa to different parts of Europe and Asia around 100,000 years ago. This migration occurred in waves but we don’t know why early humans left Africa. Recent research supports the theory that climate change may have been the force that drove early humans out. Looking at things such as dust, buried pollen, and coral, scientists have been able to show a correlation between changes in these things and periods in early human history of migration. As early humans looked for new food sources, the research indicates, they began to relocate. Listen to hear more about what may have caused humans to migrate.
Story Length: 2:23
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A United Nations report in 2014 shows that human activities are changing the planet. The scientists are more confident in their conclusions that humans are causing global warming. There are rising sea levels, higher temperatures and impacts on wildlife. This conversation with a public radio reporter looks at the long term trend in global temperatures and what humans can do to reverse the trend.
Most scientists agree that human beings originated in Africa. The first humans to come to North and South America have long been believed to be the Clovis people. But a 2002 discovery in the Paisley Caves in Oregon has challenged this view. Archaeologists discovered animal bones and fossilized excrement, known as coprolites. Some of these coprolites included human molecules, providing the earliest human DNA ever found in the Americas. This discovery has given archaeologists new clues to better understand the earliest humans found in North America.
In southeastern Turkey, archaeologists are studying ruins of what may be one of the first human places of worship. Archaeologists have long thought that humans began participating in religious rituals only after they invented agriculture. But ancient site of Gobekli Tepe, which dates back 11,500 years, may suggest otherwise. Gobekli Tepe is home to the world’s oldest temple. Listen to the story to learn more about what the site reveals about the beginnings of human civilization.
Woolly mammoths were large, elephant-like creatures that lived tens of thousands of years ago, during the last great ice age. The thick, furry coat is one of several traits that gave woolly mammoths an advantage in a very cold environment. Today, the closest biological relative is the Asian elephant, which prefers warmer climates. Scientists were curious about the genetic variations between the woolly mammoth and the Asian elephant, and what might account for the differences between the two species. In this audio story, we hear from a scientist who studied the DNA from the extinct mammoth and compared it to its contemporary descendant. Listen to learn more about what researchers discovered.
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