Examples:
1) I also do volunteer environmental cleanup. So far I've bagged 523 pounds of garbage from forested areas and some abandoned private properties. Garbage pollution happens in forested areas and land where neither party knows exactly who owns what. Land without ownership is allowed to accumulate garbage which flows into the storm drains, into the rivers, and into the oceans. Without ownership, one cannot be accountable. Without ownership there can be no consequences or rule of law. People don't take care of things they don't own (or realize they own).
2) Many African countries are still on the "communal lands" system. Where no one owns any land and individuals simply have a right to live on it. This lack of land rights and ownership is one of the main reasons why so many Africans live in poverty, are behind, cannot build wealth, and resulted in the 2010 Great African Land Grab. Fertile Land the size of France was taken away from numerous African nations at only 23 cents per hectare. That's 23 cents. The normal rate can be $1,000 per hectare. Natives are forced off the land by force.
http://www.guardian.co.uk/global-development/poverty-matters...
http://www.youtube.com/watch?v=Y05fzp0YSrw
http://www.youtube.com/watch?v=GxFTGq94dXs
http://www.oaklandinstitute.org/special-investigation-two-la...