(FILES) In this file photo taken on April 12, 2021, steam rises from the Miller Coal Power Plant in Adamsville, Alabama. The IMF on June 18, 2021, issued a report calling for the world's top polluters to adopt an international carbon price floor, arguing it offered a "realistic prospect" to combat climate change. / AFP / ANDREW CABALLERO-REYNOLDS
Steam rises from the Miller Coal Power Plant in Alabama. The declining costs for renewables are also likely to challenge coal's predominance as a cheap source of fuel, particularly in developing econoShow more

Falling costs of renewables could lower cost of developing hydrogen, Irena says

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