Melting glaciers are an “unprecedented challenge for humanity”, French President Emmanuel Macron has said. He has urged world leaders to work together on halting the devastating effects of climate change.

A Swiss Academy of Sciences panel has reported a dramatic acceleration of glacier melt in the Alpine country, which has lost 10% of its ice volume in just two years after high summer heat and low snow volumes in winter.

Glaciers in the Hindu Kush and Himalayan mountain ranges could lose up to 80% of their current volume this century without a sharp reduction in greenhouse gas emissions, according to a new report.