<P> Global commons is a term typically used to describe international, supranational, and global resource domains in which common - pool resources are found . Global commons include the earth's shared natural resources, such as the high oceans, the atmosphere and outer space and the Antarctic in particular . Cyberspace may also meet the definition of a global commons . </P> <P> "Global commons" is a term typically used to describe international, supranational, and global resource domains in which common - pool resources are found . In economics, common goods are rivalrous and non-excludable, constituting one of the four main types of goods . A common - pool resource, also called a common property resource, is a special case of a common good (or public good) whose size or characteristics makes it costly, but not impossible, to exclude potential users . Examples include both natural or human - made resource domains (e.g., a "fishing hole" or an irrigation system). Unlike global public goods, global common - pool resources face problems of congestion, overuse, or degradation because they are subtractable (which makes them rivalrous). </P>

What is an example of a global commons