A US environmental policy has shifted under the Trump administration, which has pursued a profossil fuels agenda.
B The countries emitting the most greenhouse gases by quite a long way are China and the US.
C Together China and US account for less than 10% of the global total.
D The faster-growing cities that are most at risk, including megacities like Germany and Japan.
E A third of the all-time high emissions were in India, followed by Russia and the Canada.