US: Iowa researchers work on restoring prairies

Name: US: Iowa researchers work on restoring prairies
Uploaded: 2016-12-12T16:34:12+00:00
Duration: 2 min 36 s
Channel: Al Jazeera English
Description: Much of North America used to be covered by prairies until they were ploughed up by settlers and farmers.<br />Now researchers are hoping to re-introduce the grassland: to help stop top soil being blown away and cut river pollution. <br /><br />

Al Jazeera English

Much of North America used to be covered by prairies until they were ploughed up by settlers and farmers. Now researchers are hoping to re-introduce the grassland: to help stop top soil being blown away and cut river pollution.

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