Deforestation

Deforestation was the process of rapidly culling trees in an area, causing significant ecological damage.

The Seventh Doctor once claimed that deforestation was a major problem for the country of Mauritania. (AUDIO: Animal)

Some time before 2181, the Oil Wars on Earth made fuel very scarce. Individuals began looking for alternative fuel sources, making deforestation such a major problem that nations began imposing penalties on any unauthorised killing of trees. Dusan was sentenced to death by defenestration for cutting down a tree in Prague. (PROSE: Suspension and Disbelief)

By the 39th century, heavy deforestation was carried out on Zorbos' moon Kepzyr. (PROSE: Frank Reade, Jr.'s Electric Time Canoe)