There are many types of telescopes used in astronomy, but X-ray telescopes offer a view of the cosmos that reveal just how much of a living ecosystem the universe is. …

Do we make conscious decisions? Or are all of our actions predetermined? And if we don’t have free will, are we responsible for what we do? Modern neurotechnology is now allowing scientists to study brain activity neuron by neuron to try to determine how and when our brains decide to act.

Nobel Laureate Sir Paul Nurse joins Brian Greene for a conversation about the fundamental ideas in biology explored in his new book, What Is Life? Five Great Ideas in Biology. …

Alan Alda has issued this year’s challenge to the world’s top scientists: What is sound? In an action-packed hour of interactive demonstrations, Alan and a team of communication experts invite the audience to explore what we hear, how we hear, and what that means for different species.

Winners of the prestigious $1 million Kavli Prizes were announced May 31, 2012 live via satellite from the Norwegian Academy of Science and Letters in Oslo.

Car accidents. Suicide bombers. Earthquakes. Death of a spouse. Why do some people bounce back from traumatic events while others do not? Is there a biological profile of resiliency?