Yawning is so contagious that it can spread to dogs and monkeys.
Earlier today the National Zoo asked for help locating Rusty, a red panda who'd gone missing. "If you do see Rusty," the Zoo tweeted, "don’t try to approach him.
On Sunday it was reported that Edward Snowden, the whistleblower and former National Security Agency contractor, would seek asylum in Ecuador.
Here’s what we don’t know and how close we are to figuring it out.
For most situations, the UN relies on that old standard of impartial organization. But some nations don't show up where you'd expect them to.