Richard Alley's Climate Adventures
Causes of Climate Changes
Clip: Special | 25m 45sVideo has Closed Captions
Both natural and human factors can cause climate change, but most climate scientists...
Both natural and human factors can cause climate change, but most climate scientists agree that human activity has played a significant role in global warming over the past century, by contributing to a gradual warming of the planet through the release of increasing amounts of greenhouse gases.
Problems playing video? | Closed Captioning Feedback
Problems playing video? | Closed Captioning Feedback
Richard Alley's Climate Adventures is a local public television program presented by Twin Cities PBS
Richard Alley's Climate Adventures
Causes of Climate Changes
Clip: Special | 25m 45sVideo has Closed Captions
Both natural and human factors can cause climate change, but most climate scientists agree that human activity has played a significant role in global warming over the past century, by contributing to a gradual warming of the planet through the release of increasing amounts of greenhouse gases.
Problems playing video? | Closed Captioning Feedback
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Richard Alley's Climate Adventures is a local public television program presented by Twin Cities PBS