The United Nations climate talks neared the end of their first week on Saturday with negotiators still at work on how much ...

The U.N.'s climate chief called on leaders of the world's biggest economies on Saturday to send a signal of support for ...

Sustainable sources of carbon will be necessary in a net-zero economy – chiefly in petrochemicals and steelmaking – paving the way for green sources of CO2 derived from biomass to scale up negative ...