Paris climate accord

He pulled out despite mounting evidence of the reality and impact of climate change

US president will also meet face-to-face with Russia's President Vladimir Putin on Friday for the first time

Senior Vatican leader criticises poor level of science education in US schools

The pullout will align the United States with Syria and Nicaragua as the world's only non-participants in the accord

New figures show that renewable energy attracted record investment of $300 billion in 2015, outstripping fossil fuels

In total, 73 countries out of 195 have ratified the agreement, according to the UN website