Speaking of things we do to raise smart babies...Consider the plight of Castaway, a pregnant bottlenose dolphin who's due any minute. When dolphins are deaf, they're not able to echolocate in order to defend them against predators, and that's a rough sentence for a dolphin in captivity.Â Castaway wasÂ rescuedÂ last November and has since been stayingÂ atÂ Key Largo'sÂ Marine Mammal Conservancy. Her calf is about to be born any day, and tests confirm its hearing abilities are normal. To make sure the baby learns to echolocate, they've installed phone lines running from the conservancyÂ over to a marine research facility down the road. You can watch for updates here.