National Geographic April issue is devoted to exploring race—and how it defines, separates and unites us.
While "race" may have far more social than biological meaning.
People do tend to resemble others with the same geographical ancestry, because they share a common genetic heritage.
How is this ordered diversity expressed in our genes?
How can the new field of comparative genomics inform our understanding of the term "race", and why it is so often misunderstood?