New Delhi, June 14 -- A group of world-leading climate scientists is calling upon global leaders to factor in the economic, environmental and humanitarian costs of failing to keep global warming below 1.5 degree Celsius this century, in a move led by experts from UCL, the University of Exeter and International Centre for Climate Change and Development (ICCCAD).

As the leaders of seven of the world's wealthiest nations meet in Cornwall,UK, for the G7 summit, the scientists have launched a 1.5 Degree Charter to highlight how breaching the target outlined in the Paris Agreement will cost far more than paying poorer nations to help global efforts to reach it.

It is hoped governments, businesses and the public will get behind the Charter to in...