Its both last few years a lot of temperature records have been broken. It is also being talked about a lot more as western countries have been feeling the rise

Its both last few years a lot of temperature records have been broken. It is also being talked about a lot more as western countries have been feeling the rise directly with the extreme heatwave in Europe 2-3 years ago, then Australia with the bush fires and now North America this year. Previously the sea water rise and global warming though they might have believed it was just a theory to most they had not felt the direct effects.