A reading of above 400 can affect healthy people and seriously impact those with existing illnesses

Alliance keen to provide world with oil supply it needs

Says countries should be on alert as headwinds are growing

Treaty being used by energy companies to sue governments for regulatory changes

The yen rose as high as 144.50 per dollar on Friday

Probes short-lived stock rallies of firms following their debuts

Used to calculate damages associated with emissions from burning fossil fuels etc

Up to 80-90% of Russian oil will continue to flow outside the cap mechanism

The Indian rupee fell to record low versus the US dollar

Crude stocks down 1.7 million barrels, US expected to sell 15 million barrels from reserves