Conservation is the preservation or efficient use of resources (in an efficient or ethical manner), or the conservation of various quantities under physical laws.
More than a billion people globally do not have enough clean water and 2.6 billion people lack adequate sanitation. Italian researchers in a region challenged by drought plan to remedy that at both the local and global scale.
EN 
CS
DE
ES
FR
HU
IT
PL
PT
РУ
SK
TR
УК
AR
中文
