You know I never actually thought of it like that, news breaks out whenever there is a reaction to It otherwise it stays hidden. When trump pulled out of the paris climate accords there was a negative reaction and therefore the media reported it and everyone around the world got to know.

On global warming, It seems that countries are slowly changing to renewable energy because it is not unsustainable for fossil fuels to power nations, UK some weeks ago ran entirely on wind energy for about 4 days and it was successful, which means theres a good chance in the future that the whole world can be entirely sustainable on renewable energy.