https://bbc.com/news/science-environment
Progress seen in climate talks between world's two biggest carbon emitters but major hurdles remain.
The two countries, which are the world's biggest carbon emitters, agreed on further measures to tackle climate change, but stopped short of committing to end the use of fossil fuels.
They promised to co-operate to slow methane emissions - a particularly potent greenhouse gas - and support global efforts to triple renewable energy by 2030.
"It's small but important steps on climate change," said Bernice Lee, an expert on China and a fellow at Chatham House, a UK think tank.
David Waskow, from the World Resources Institute, called the methane agreement a "major step".
"China is the world's largest methane emitter and serious actions to curb this gas is essential for slowing global warming in the near-term," Mr Waskow said.
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