This program, Ending the Epidemic: Science Advances on AIDS, brings together leading researchers on the forefront of scientific efforts to understand and attack the virus that causes AIDS. Moderator Richard …

Astronomer Jill Tarter leads the charge to search for intelligent life on other planets by listening to clues from over 40 radio telescopes. Episode filmed live at the 2010 World …

Physicist and mathematician Brian Greene and journalist Faith Salie explore the past and future of the cosmos – from the big bang to the closest science can take us to the very end – …

Cosmology is the one field in which researchers can—literally—witness the past. The cosmic background radiation, ancient light streaming toward us since the Big Bang, provides a pristine window onto the birth and evolution of the universe.

World Science Festival co-founder Brian Greene and seven-time Emmy Award–winner Alan Alda muse on Einstein’s Theory of Relativity in a post-performance discussion after a reading of Alda’s play “Dear Albert.”

Are we alone? It’s a question that has obsessed us for centuries, and now we have the technology to do more than wonder. Scientists on the hunt for distant planets and extraterrestrial intelligence explore faraway galaxies and barely visible realms.