Whether you realize it or not, you have a personal brand, says social entrepreneur Marcos Salazar -- and you have the power to shape what it is. Here's how you can create a brand that captures who you are, who you'd like to be and how you want to make an impact on the world.

Celeste Headlee has worked as a radio host for decades, and she knows the ingredients of a great conversation. Honesty, brevity, clarity and a healthy amount of listening. In this insightful talk, she shares 10 useful rules for having better conversations. “Go out, talk to people, listen to people,” she says. “And, most importantly, be prepared to be amazed.”

Have you ever talked with a friend about a problem, only to realize that he just doesn't seem to grasp why the issue is so important to you? Have you ever presented an idea to a group, and it's met with utter confusion? What's going on here? Katherine Hampsten describes why miscommunication occurs so frequently, and how we can minimize frustration while expressing ourselves better.