Changes

'''Whaling''' is the commercial activity of harvesting and killing [[whale]]s in order to sell their oil and other components. It is an activity with an ancient history, but the efficiency of modern whaling techniques beginning in the [[20th Century]] has driven many species of whales to the brink of extinction.

'''Whaling''' is the commercial activity of harvesting and killing [[whale]]s in order to sell their oil and other components. It is an activity with an ancient history, but the efficiency of modern whaling techniques beginning in the [[20th century]] has driven many species of whales to the brink of extinction.