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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.
Story Length: 4:25
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Google Maps is playing an unexpected role in modern-day disputes over borders, or so called "border wars." In 2010, Nicaragua claimed the Costa Rican island of Isla Calero and defended its actions by pointing out that Google Maps showed the island as Nicaraguan. A year later, the Netherlands complained that Google Maps gave land claimed by the Netherlands around the Ems River to Germany. Google says its Maps tool is only for “entertainment purposes”, and should not be used to make “territorial, political, or military decisions.” This public radio story explores how satellite mapping has changed border disputes.
A group of items wrapped in cloth and believed to have spiritual power is known as an African spirit bundle. Found in Annapolis, Maryland in 2008, the African spirit bundle gives us insight into who would have used it and why. It dates back to the early 18th century and is most surprising because of where it was placed. It hung at a crossroads, which in the Yoruba tradition is a place of great danger. Listen to hear more about the items in the bundle and who may have put them there.
America looked different before Columbus arrived in 1492. Historian Charles Mann paints a vivid picture of pre-Columbian America. It was a world of glittering cities, advanced technology, monumental architecture, and powerful empires. Listen to learn what happened to it all and how it could have been destroyed by European might or a natural disaster.
The Lexile Audio Measure is an indicator of the complexity of an audio passage. It is based on a scientifically developed scale with a maximum score of 1950L.How to Use Lexile Audio Measures
Find stories at the right level of complexity for your students, so that they will be challenged without being frustrated. The measures are categorized into low, medium, or high in order to aid teachers in story selection when they do not know students’ Lexile listening levels.
|Listening Level||Lexile Audio Measures|
These recommended ranges are for instructional use of Listenwise audio content in combination with supports such as the interactive transcript, etc.
|Grade||Lexile Audio Measures (Recommended Ranges)|
|1||215L - 610L|
|2||490L - 855L|
|3||725L - 1060L|
|4||945L - 1250L|
|5||1045L - 1350L|
|6||1125L - 1430L|
|7||1190L - 1500L|
|8||1250L - 1555L|
|9||1300L - 1610L|
|10||1345L - 1655L|
|11/12||1385L - 1695L|