Whether they're your friend or someone you only acknowledge in the break room, we've got you covered with these birthday ...

Danielle Bayard Jackson, author of “Fighting for Our Friendships,” has been studying the science of connection, cooperation, and conflict for 10 years.

Often serving as our first friends and lifelong companions, the bond we share with our brothers and sisters is a unique melting pot of love and rivalry, support and bickering, as well as understanding ...