Before the Flood is a 2016 documentary which shows a 3 year journey conducted by DiCaprio and co-creator and director Fisher Stevens.

They went to every angle of the world to document the shocking impacts of climate change questioning humanity's ability to reverse the situation to save the world.

They learnt a lot and witnessed on their incredible journey learning that the world’s climate was interconnected and that it was fast breaking apart and this required a quick intervention.

The film main aim was to give people a sense of urgency and to make them understand particular issues to be addressed to solve the problem. One of the main concerns was the carbon emission and to address this they came up with carbon tax and investment in renewables and to bring less money and subsidies out of oil companies.

They urged to use the power of the ballot box to win this change from political leaders who do not believe in modern science or the scientific method or empirical truth.

I chose this particular movie because it shows a sense of urgency in addressing environmental problems by assessing the root causes and coming up with solutions such as sanctions on oil companies that would curtail the root causes like carbon tax.

The green message here is renewable energy that restore themselves after a short period and do not diminish.