Global polices take time to bubble up. Say you get a local authority to agree to something (news), then multiple ones (news), then the entire state (news), then multiple states (news), then a continent-sized entity (news), then multiple continent-sized entities (news), then all entities (news).

That's a lot of announcements for what could be, in practice, a single policy. When the problems are as many and as interlocked as this particular one is (involving emissions, energy sources, level-playing market issues, etc), you will have a multitude of agrements and initiatives, which will feel "multiplied" through news channels.