Emerging research shows that babies' DNA stays with their mothers decades after birth. Why it matters: We've shared stories ...

A BOND between a child and a mother is special and beautiful for most people. Every mother's day, many around the world take ...

A study of starlings in Africa shows that they form long-term social bonds similar to human friendships. The fact that humans who are not related by blood help each other repeatedly over time is ...

The fact that humans who are not related by blood help each other repeatedly over time is demonstrably true—think of the ...

Humans who are not related by blood help each other repeatedly over time. But the idea that such interactions occur in the ...