Global ratings agency says costs of offsetting carbon emissions likely to pile pressure on airlines already struggling to stay afloat
Firm to double number of offset flights and invest $50m in sustainable aviation fuels over next decade, as BA promises to review controversial fueling practice
Citigroup analysts predict the cost of carbon offsetting commercial flights could exceed $6bn a year by 2025
Government disappoints campaigners by insisting shipping and aviation emissions should be dealt with at a UN level
UK trade group Airlines UK warns net zero by 2050 will not be achieved without more government support for green aviation technology development
Net zero goal makes case against Heathrow expansion far stronger, campaigners claim
CCC report on behaviour change needed to hit net zero goal also calls for a frequent flier levy and scrapping of air miles schemes
Technology is initially planned for a site in the US, but could also be used in the UK if a proposed plant is given the go-ahead, Velocys says
Hydrogen fuel cell powertrain technology has the potential to cut emissions for transport to remote islands, say technology developers
An eight-country poll reveals deep concern about the climate crisis, with large proportions of the population ranking it as the top global issue that needs tackling