Due to the increasing difficulty of sustaining natural plant life on Earth, carbon dioxide converters were created to filter out the polluted air. Shaped like trees, these have replaced most of the natural trees that used to exist. Typically in a city there will be several of these, as well as a cyber forest in some of the larger metropolises.
Generally, cyber woods have a maintenance building located within to control and check the statuses of the trees.
Typical trees that they are fashioned after are Dogwood, Pine, Oak, Acacia, and several varieties of flowering trees. Some have built in lights for festive displays.