Snowpiercer (2013)
After governments try to fight the climate crisis through an ill-conceived geoengineering scheme, they accidentally usher in a new ice age that forces all of humanity to rush onto a huge train in hopes of surviving. Regular people who could only afford tickets for the back of the train live in cramped, squalid quarters, while the wealthier group lives in luxury toward the front of the train.
Scientists and governments have been taking geoengineering more seriously—despite the many risks—and hopefully tales like Snowpiercer encourage the appropriate caution. Hopefully, this ice age scenario doesn’t occur in real life, but it was nice to see that it was a huge train—and not an SUV—that saves humanity.