CW-7 was a cooling agent that was used to cool down the temperatures of the planet in response to climate change. However, CW-7 was too effective and instead froze the planet, starting a new ice age so extreme that no life could survive it. Before CW-7 was released, Mr. Wilford predicted that CW-7 would freeze the planet, which led him to convert Snowpiercer from Luxury Liner to an Ark.
In Season 2, CW-7 may have begun to break up in the upper atmosphere and fall to Earth, meaning that the planet might be warming and may potentially become habitable again in the survivors' lifetime rather than in a thousand years.
Description
According to the Headwood's on the theory that the Earth is warming (based on the snow sample taken by Melanie Cavill), the CW-7 may have been buried in a larger compound, Ammonium Sulfate. And if that's what it was, in the quantities they saw, the theory holds.
Appearances
- Season One
- Season Two
Trivia
- Contrary to the movie, in the TV Series, the CW-7 was released by missiles rather than planes.
- In the graphic novels, CW-7 was a weapon of mass destruction that was activated during a war, but who activated it first is currently unknown.
