Ever get frustrated by too many choices? Your frustration could lead to clinical depression. Learn more on this Moment of Science.
When you've been to the zoo have you noticed how some of the animals pace around a lot? "Born to Roam" on this Moment of Science.
Killer whales communicate in a variety of dialects. There are discernible differences, however, between the chatter of killer whales that eat only fish and those that eat both fish and seals.