Our successes and failures are similarly linked to others, though we may feel their effects only personally. Every choice you make, every behavior you exhibit, and even every desire you have finds its roots in the social universe.  

Professor Douglas Melton takes a look at the basis for regenerative medicine, the human body’s ability to divide, grow, and specialize cells.

We're halfway through our rollout of The Floating University here at Big Think. It's some of the most vital, timely, and mind-changing video content anywhere on the Web. Here's number six of 12 on our list, featuring Yale psychologist Paul Bloom.

Words of wisdom from public intellectual Noam Chomsky: "One of the problems of organizing ... is that people tend to think — even the activists — that instant gratification is required. You constantly hear: 'Look I went to a demonstration, and we didn't stop the war, so what's the use of doing it again?'"

Words of Wisdom from the legendary Chrysler executive: "Motivation is everything. You can do the work of two people, but you can't be two people. Instead, you have to inspire the next guy down the line and get him to inspire his people."

Earth Day words of wisdom from the great Scottish-American environmentalist John Muir, excerpted from his 1901 book Our Natural Parks.

Dr. Julie Holland's new book addresses common societal myths society about women, mood, and emotional control. "Moods are not an annoyance to be stuffed away," says Holland. They're "one of the biggest strengths and assets that women have."