- Open CourseWare from MIT, university education without the degree, and here also is the Spanish version.
- Academic Earth, academic presentations.
- TED Talks, 20-minute presentations about Technoloy, Entertainment and Design. Google Maps and TED are, for me, the best things since the invention of the Web itself.
- Authors at Google features 60-minute presentations by scientist, writers, politicians...
- YouTube EDU also features educational videos.
- PBS documentaries: Nova, Nature, Frontline, Made in Spain, Wired Science...
- The James Randi Foundation and the The Richard Dawkins Foundation try to illuminate this somewhat obscurantist era of homeopathy, so-called "alternative" cures, miracles, bad religion, bad medicine and quackery.
- El Círculo Escéptico y la ARP-SAPC aportan artículos y documentación crítica y analítica sobre pseudociencias