A family walks through a gate in Yixianhu Park in Zhongshan, Guangdong Province, China. A study found that mammals, including the human race, only emerged to function in the day time after the demise of the dinosaurs. Photo: EPA-EFE

Mammals became day creatures only after dinosaurs became extinct: study

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A family walks through a gate in Yixianhu Park in Zhongshan, Guangdong Province, China. A study found that mammals, including the human race, only emerged to function in the day time after the demise of the dinosaurs. Photo: EPA-EFE
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