Why did we leave it till now to do something about CO2 emissions?

Dr. Graham Finlay, from the School of Politics and International Relations at University College Dublin, joins Stefanie to answer, humans have known for over a century about the greenhouse effect of CO2 emissions. Why did we leave it till now to do something about it?... Listen and subscribe to Moncrieff on Apple Podcasts, Google Podcasts or Spotify.    Download, listen and subscribe on the Newstalk App.     You can also listen to Newstalk live on newstalk.com or on Alexa, by adding the Newstalk skill and asking: 'Alexa, play Newstalk'.