Legacy/Memory - in some countries, sound archives are being created to record first-hand experiences of as wide a cross-section of present-day societies as possible.
Memory -rare manuscripts, maps, books, musical scores, sound recordings, films, prints and photographs will all be available online thanks to a new UNESCO-backed World Digital Library.
Diversity - scientists are creating an "encyclopedia of life" to aggregate data about every known living species. It will need continuous updating: a purple fluorescent frog is one of 24 new species just found in Surinam.