On the cliffs above San Francisco's Ocean Beach perches a landmark observatory—a giant camera obscura. Step inside with Robert Tacchetto and see how this centuries-old technology creates enchanting images of the outside world.
Darwin: Who's the Fittest? A Predator-Prey Competition(Webcast)
Running Time: 00:19:33
What makes one individual "fitter" than another? Staff scientist Karen Kalumuck introduces natural selection, then four teams of "predators" compete with each other for prey.Who will thrive and who will face extinction?
The Nobel Prize: 100 Years of Creativity: Behind the Scenes: Awarding the Nobel Prize(Webcast)
Running Time: 1:26:20
Professor Anders Barany, Deputy Director of the Nobel Museum and former secretary of the physics commitee that awards the Nobel Prize, speaks about what makes the Nobel Prize one of the world's most prestigious honors. He gives an insider's tour of Alfred Nobel's will and how laureates are chosen and celebrated.
Bat curator Richard Harbord and photographer Frank Greenaway explore questions about our furry flying friends in Belize. We also talk with bat experts in London and at the Exploratorium.
Webcasts made possible through
the generosity of the Gordon and Betty Moore Foundation, The Jim Clark
Endowment for Internet Education, the McBean Family Foundation,.and the Corporation for Educational Networks Initiatives in California (CENIC).