British Airways has set a target of halving its net carbon dioxide emissions over the next 40 years.
The carrier is claiming that its environmental target is the "most ambitious" of any carrier, and would result in its generating 8 million tonnes of carbon dioxide by 2050.
BA chief Willie Walsh unveiled the initiative in India, following the carrier's commencement of operations to Hyderabad.
"Halving net carbon dioxide by 2050 is an extremely challenging target. But it is one I am sure we can achieve," he says.
"We will make progress through investment in cleaner aircraft, use of alternative fuels, more efficient flight routings and the spread of emissions trading from Europe to the whole world."