A new report from the UN's top body of climate scientists is warning that temperatures will go beyond a key danger point unless countries worldwide cut greenhouse emissions faster than they are currently committed to doing.
Biden will make the formal announcement later today in remarks on his administration's plans to combat rising gas prices.
Many experts say this is unfeasible with current technologies, and even if it could be done it would be far costlier than preventing the emissions in the first place.However, the figures show much of the carbon dioxide already in the atmosphere was released by rich countries that were the first to burn coal, oil and gas when the industrial revolution really got going in the 1850s.
Among the solutions recommended are a rapid shift away from fossil fuels toward renewable energy such as increasingly cheap solar and wind power, the electrification of transport, less meat consumption, more efficient use of resources and massive financial support for poor countries unable to pay for such measures without help.
"You can see the first signs that the actions that people are taking are beginning to make a difference," said Skea, the panel's co-chair. Still, the British government's former chief science adviser David King, who wasn't involved in writing the report, said there are optimistic assumptions about how much CO2 the world can afford to emit.
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