Dogs do not like people who are mean to their owners, Japanese researchers said Friday, and will refuse food offered by people who have snubbed their master.The findings reveal that canines have the capacity to co-operate socially — a characteristic found in a relatively small number of species, including humans and some other primates.

Powerful aftershocks rocked Nepal on Sunday, panicking survivors of a quake that killed more than 2,300 and triggering fresh avalanches at Everest base camp, as rescuers dug through rubble in the devastated capital Kathmandu.A string of earthquakes have been occurring in Chile and Southern California.