New Orleans native Lisa P. Jackson is administrator of the Environmental Protection Agency (EPA). She is the first African-American to serve the post. She started her career working for the …

Should we limit the use and knowledge of genetics in the case of conception? What about using genetic engineering to make humans healthier—or even enhancing humanity by manipulating DNA?

This statement is false. Think about it, and it makes your head hurt. If it’s true, it’s false. If it’s false, it’s true. In 1931, Austrian logician Kurt Gödel shocked the worlds of mathematics and philosophy by establishing that such statements are far more than a quirky turn of language: he showed that there are mathematical truths which simply can’t be proven.

Psychologist Paul Bloom joins Brian Greene for a spirited exploration of consciousness, memory, empathy, free will, and the elusive workings of the human mind. This program is part of the …

What is color? It seems like a simple question at first, but when you think about it, the reality of what we’re seeing is a pretty complex situation. Our human eyes sift through a small piece of the vast electromagnetic spectrum and translate it into every color of the rainbow.

Professor Witten is a leading light of superstring theory and the only physicist to have won the vaunted Fields Medal, mathematics’ highest honor. Known for advancing a number of novel approaches in mathematics and physics, Witten opened up new vistas in 1995 when he unified five seemingly competing superstring theories into M-theory, which seeks to unify Einstein’s general theory of relativity with quantum mechanics.