Middle East expert Vali Nasr talks about the latest developments there, and about his book The Shia Revival: How Conflicts Within Islam Will Shape the Future.
A new study reveals how a group of killer whales is able to hunt whale sharks, adding to a growing body of research showing how the whales use intelligence and coordination in impressive ways.
With efforts to bolster the federal Voting Rights Act unlikely under Republican control of the new Congress, advocates are refocusing on state protections against racial discrimination in elections.
Many animals get their external marking--like, feathers, hair or scales-from genetics. But it turns out, the crocodile gets its head patterns differently.