In animals, this part of the brain evolved around the time of the dinosaurs before mammals existed. It's hardwired to beat starvation. For three days Jean-Luc has been trapped underground. He hasn't had a morsel to eat. He doesn't know it, but his br...
46 企鹅的生存危机 DATE=7-13-01 TITLE=ENVIRONMENT REPORT - Penguins Dying BYLINE=Jerilyn Watson （Start at 59" ）This is Bill White with the VOA Special English ENVIRONMENT REPORT. Experts say...
