Megacity planning must change in four years to limit global warming

High-carbon infrastructures lock planet into irreversible greenhouse gas emissions, says campaign group

By the end of this decade it may be too late to limit global warming to scientifically guided limits, if the infrastructure built in the next four years is constructed along the same lines as currently planned.

Building high-carbon infrastructure - from transport systems predicated on motor car use, to new coal-fired power plants, and buildings that leak energy - effectively "locks in" a future of greenhouse gas emissions that are likely to far exceed the planet's capacity to absorb carbon.