By Matt McGrath
The European Union says it is aiming to become the first major economy to go “climate neutral” by 2050.
Under the plan, emissions of greenhouse gases after that date would have to be offset by planting trees or by burying the gases underground.
Scientists say that net-zero emissions by 2050 are needed to have a fighting chance of keeping global temperatures under 1.5C this century.
The EU says the move will also cut premature air pollution deaths by 40%.