New standards will lower the legal limit of the smog-causing pollutant from 75ppb to 70ppb
The US government has announced a new national limit for ground-level ozone, in the latest move by the Obama administration to push through more ambitious environmental regulations. The new rule, unveiled...
COP25 hosts Chile insists a workable compromise must be found, but Brazil, the US and Australia stand accused of trying to neuter agreement
COP25 talks likely to spill into extra time as EU, smaller nations and business urge for robust Paris Agreement rules in face of US, Brazil and Australian opposition
Was it really 'a bad night for the climate'?
Who's in and who's out following the historic Conservative victory