China has agreed to let two pandas stay in the National Zoo for five years. Newsweek's Melinda Liu reports on the panda diplomacy—and the expectation of a new cub. Plus, watch adorable panda videos.

Pandas are Mother Nature’s ultimate goofballs. Do we have any scientific studies, peer-reviewed journals, or statistics to support this claim? No. We just have eyes, a brain, and an innate ability to ...