Agence France-Presse: The next 20 years must see a "critical" investment shift from high- to low-carbon energy sources to limit damaging global warming, Nicholas Stern, an authority on the economics of climate change, said Thursday.
"The next 20 years are going to be a very special period, they are going to be critical to manage... key investments," the British economist told journalists before appearing as a guest lecturer at a Paris university.
"If we make the key investments well... in urbanisation, energy systems...