The phrase "big chill" refers to a situation where people drift apart or lose contact with each other over time, often due to growing distance or changes in their relationships. Full definition
His NSF grant might signal an end to Biosphere 2's big chill in academia. (discovermagazine.com)
Therefore, The Hideaway is placed in an anticipated light, that it will deliver as bigger chills as it did for the last DLC. (thatvideogameblog.com)
The Nature paper (abstract and citation below) goes on to propose that humans, as long as they have a technologically powerful society, would be likely to avert such a slide into a long big chill by adding greenhouse gases to the atmosphere. (dotearth.blogs.nytimes.com)