Video: Business

Neurons light up as zebrafish ponders future (3:47) 

April 9 - Scientists at the Howard Hughes Medical Institute in Virginia are demonstrating that answers to questions about human brain function begin with creatures far more humble. Through advanced microscopy, they have revealed the brain activity of a zebrafish in unprecedented detail, paving the way for technology that might one day provide information about human brain disorders. Rob Muir reports. ( Transcript )

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