Download free stock photos for commercial use
World’s largest biomedical library and a national resource for health professionals, scientists, and the public
Sharing blueprints and assembly instructions for furniture construction
Videos on various themes and actions around the world
Public domain or creative commons music scores.
The “OpenCourseWare” puts online the educational material used in the courses of MIT (Massachusetts Institute of Technology)
Online encyclopedia, in wiki, for 8-13 year olds
Useful and edible plants of temperate regions
OBIS builds and maintains a global alliance of scientists to facilitate free and open access to data and information on biodiversity and marine life.
Thousands of Free High-Resolution Stock CC0 Photos and Videos
The sustainability wiki! We help build rich and sustainable lives by sharing knowledge, experiences, ideas and more.
Searchable and downloadable old comics
