CO2

Science fiction [girlxgirl]
It is the year 3,125. The ozone layer has almost been completely destroyed, and the government has created large "bubbles" to surround the cities of the world to protect the people from the toxic gases. They are believed to be impenetrable, and cannot break down.
However, a group of people want to destroy the bubbles, and the world is convinced that they are mass murderers. They have learned a way to destroy these "invincible" bubbles, and everyone is determined to stop them. But Sam and her friends Ella and Lance discover that there is a much bigger reason behind these crimes. A reason that nobody thought could be true.