Welcome to pbs.org, the home of comprehensive companion Web sites for more than 1,000 PBS television programs and specials, as well as original Web content and real-time learning adventures. With more than 150,000 pages of content to explore, visitors to pbs.org can delve further into the subjects they most enjoyfrom news to history and the arts to science and technology.

Find presentations by resident and visiting scientists and researchers in theoretical physics given at PI.

Steven Colbert takes evolutionary theorist and Oxford Professor Richard Dawkins to task over his latest book The God Delusion.

A set of four priceless archival recordings from the University of Auckland (New Zealand) of the outstanding Nobel prize-winning physicist Richard Feynman - arguably the greatest science lecturer ever. Although the recording is of modest technical quality the exceptional personal style and unique delivery shine through. Feynman gives us not just a lesson in basic physics but also a deep insight into the scientific mind of a 20th century genius analyzing the approach of the 17th century genius Newton.

Your source for the latest science research news.

Every science video on ScienceHack is screened by a scientist to verify its accuracy and quality.

ScienCentral News, your independent source for the latest news on science and technology. Our stories appear on your local TV newscasts, but you can view them here, too--along with in-depth information to help you dig deeper.

SciVee is about the free and widespread dissemination and comprehension of science. To learn more about SciVee link to our About Page. SciVee is operated in partnership with the Public Library of Science (PLoS), the National Science Foundation (NSF) and the San Diego Supercomputer Center (SDSC). Please see our

Presented as a public service, the Stanford Health Library website contains videos covering common health topics including cancer supportive care, health and society, lectures, women's health, asthma, Jonathan King Lectures, and more.

Each year, TED hosts some of the world's most fascinating people: Trusted voices and convention-breaking mavericks, icons and geniuses. The talks they deliver have had had such a great impact, we thought they deserved a wider audience. So now - with our sponsor BMW and production partner WNYC/New York Public Radio we're sharing some of the most remarkable TED talks with the world at large. Each week, we'll release a new talk, in audio and video, to download or watch online. For best effect, plan to listen to at least three, start to finish. They have a cumulative effect...

In this special think MTV episode of Diary, actress and United Nations Goodwill Ambassador Angelina Jolie journeys to Kenya with the world's leading expert on poverty, Dr. Jeffrey Sachs, the Director of the Earth Institute at Columbia University and Special Advisor to UN Secretary-General Kofi Annan on the Millennium Development Goals. On their journey, they witness how the challenges of hunger, disease and isolation in Africa are being overcome in this small village beset by hunger, AIDS, and malaria.

With the support of the Hewlett Foundation and MIT Open Courseware, Intelligent Television is organizing a two-day symposium at MIT on "The Economics of Open Content," on January 23 and 24, 2006. We are bringing together commercial representatives of most media industriespublishing, film, music, television, video, software, education/courseware, gamingtogether with representatives of cultural and educational institutions who are innovative in this area and legal and business minds in the academy. People representing many new and established commercial companies will be there. New Yorker economics columnist and bestselling author (The Wisdom of Crowds) James Surowiecki will keynote at the Cambridge meeting, with a presentation on January 23 titled "Openness as an Ethos."

Totally cute movie about an evil hand that is trying to recruit a young boy to join his evil empire by bribing him with Twizzlers!

Who says a geek can't be an environmentalist?

The Med Ed Hour features a variety of medical programs aimed at physicians, nurses and other health care professionals who wish to expand their knowledge base, keep current on the latest research, and in some cases, earn Continuing Medical Education credit. The Med Ed Hour airs on UCTV every Tuesday, Wednesday and Thursday from noon to 1:00pm (Pacific Time) and covers the latest developments in health care including smallpox, hormone replacement therapy, Alzheimer's disease and more.