IEA says route to net zero requires more cash and less politics

Record growth in clean energy technology, including solar panels and electric vehicles, means it is still possible to limit global warming to 1.5 degrees Celsius (2.7 degrees Fahrenheit), the International Energy Agency (IEA) said on Tuesday. But it also said the world would need need to invest nearly $4.5 trillion per year in the transition to cleaner energy from the start of the next decade, up from spending of $1.8 trillion expected in 2023.