Want to help map the world? Community builder Rebecca Firth explains how the Humanitarian OpenStreetMap Team (HOT) is using open-source software powered by volunteers to put one billion people on the map in the next five years. (This ambitious plan is a part of the Audacious Project, TED's initiative to inspire and fund global change.)

Maps for visually impaired citizens where touch is used as a method of reading can be now printed out for you in the ELSA and Teiresiás centers.
Just pick the scale and desired region you need printed out and inquire in person or via email to stredisko@elsa.cvut.cz or teiresias@muni.cz.
Tactile maps are now available in three levels of detail. To see what the map will look like, zoom in using small, medium and large scale resolution. This feature is available in the Czech Republic and Slovakia.