this tile is particularly important to martin kunze.how a glacier has melted in just a few decades. >> that's a central element of the archive -- documenting climate change. because if we don't safely preserve the raw climate observation data, future generations might not understand that climate change took place, and certainly not to what extent. >> the project won't be limited to just tiles. scientists are working with martin kunze on new data storage materials to fit more data on smaller spaces, because there's plenty of demand. even the university of vienna has tiles here. the project "memory of mankind" is to last forever for everyone. lara: spain's countryside has seen populations plunge as people leave their home villages for big cities. it's a phenomenon that's become known as empty spain. in the southeast of the country, the village of peÑa zafra day abaho has all but emptied out. the youth have left the elderly are left behind. it's a bitter pill to s wallow for lusia nicholas, who runs the village. but she's not giving up jus

this tile is particularly important to martin kunze.how a glacier has melted in just a few decades. >> that's a central element of the archive -- documenting climate change. because if we don't safely preserve the raw climate observation data, future generations might not understand that climate change took place, and certainly not to what extent. >> the project won't be limited to just tiles. scientists are working with martin kunze on new data storage materials to fit more data on smaller spaces, because there's plenty of demand. even the university of vienna has tiles here. the project "memory of mankind" is to last forever for everyone. lara: spain's countryside has seen populations plunge as people leave their home villages for big cities. it's a phenomenon that's become known as empty spain. in the southeast of the country, the village of peÑa zafra day abaho has all but emptied out. the youth have left the elderly are left behind. it's a bitter pill to s wallow for lusia nicholas, who runs the village. but she's not giving up jus