A study found that 16 of the leading undergraduate science textbooks less than 4 percent were devoted to climate change related environmental issues or renewable energy applications. Almost 90 percent of Americans do not know there is scientific consensus on climate change.

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A study found that 16 of the leading undergraduate science textbooks less than 4 percent were devoted to climate change related environmental issues or renewable energy applications. Almost 90 percent of Americans do not know there is scientific consensus on climate change.