Well-trained guide dogs are important for visually impaired people who rely on them. But many puppies bred to be guide dogs flunk out of training programs.
A study published Monday in the Proceedings of the National Academy of Sciences suggests the way a puppy's mother raises it may be the key to the dog's success, or failure. A research team at the University of Pennsylvania found that puppies destined for guide dog training are more likely to fail if they're coddled by their mothers.
The rain began on Good Friday. It fell into the roofless ruins of Port-au-Prince's Catholic cathedral. It swirled through stalls in the market downtown. In the hills above Haiti's capital, the rain ran off the clay roof tiles of upscale homes.
No matter where the rain fell, it was all destined for the same place: the system of concrete canals that cut through the city and down to the sea.