system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:why was the world able to come together and ban leaded gasoline and CFCs, but refuses to do much of anything about greenhouse emmisons?
gpt
Two main reasons: First, the effect of greenhouse gas emissions occurs on a longer timescale and with much less clarity on exactly what and where will be effected.  Second, the things that produce greenhouse gasses are much more central to the global economy than leaded gasoline or CFCs.