Ozone layer

The ozone layer in Earth's atmosphere was damaged in the course of global warming. In part, this was a plot by the Zygons to transform the planet's atmosphere to make it more amenable to Zygon life. The Zygons encouraged the introduction of modified CFCs Earth's atmosphere, by investing in industrial projects, and releasing any toxic products to the humans which would be harmful to the ozone layer. (AUDIO: The Zygon Who Fell to Earth ^[+]Loading...["The Zygon Who Fell to Earth (audio story)"])

In December 1992, the women of Cheldon Bonniface blamed the ozone for the unusual weather. (PROSE: Timewyrm: Revelation ^[+]Loading...["Timewyrm: Revelation (novel)"])

Prior to 1997, the Bandrils attempted to destroy the Earth's ozone layer but were thwarted by UNIT in what the Brigadier would later cite as an example of an incident which was resolved without the assistance of the Doctor. (PROSE: The Dying Days ^[+]Loading...["The Dying Days (novel)"])

In 1963, Sam Jones, who was from 1997, reflected that Fitz Kreiner didn't know anything about holes in the ozone layer. (PROSE: The Taint ^[+]Loading...["The Taint (novel)"])

By the early 21st century, the size of the hole in the ozone layer was increasing. (PROSE: Iceberg ^[+]Loading...["Iceberg (novel)"])

By the 26th century, Earth lacked any kind of ozone layer. (PROSE: Oblivion ^[+]Loading...["Oblivion (novel)"])

Ace believed that Antýkhon's ozone layer was "buggered up." (PROSE: Birthright ^[+]Loading...["Birthright (novel)"])