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An employee who for British Airways (BA) has newspapers about the company creating more CO2. The unnamed person a whistleblower - someone who the truth about company secrets. The whistleblower said BA and many other airlines use "fuel-tankering" to money. However, fuel-tankering is very bad for the environment. Scientists say it to global warming. Fuel-tankering is when airplanes store extra fuel to to their destination and back. This means the airline money by paying for all the fuel in its home country instead of more expensive fuel at its destination. Scientists say fuel-tankering as much CO2 in the air each year as a large town.

A documentary about British Airways and fuel-tankering was on the BBC this week. In the documentary, the CEO of BA to look again at how it fuel. He the airline uses the fuel-tankering method and said it was "maybe the wrong thing to do". The money by fuel-tankering for each flight is very small, but there is a big cost to the environment. A recent flight from London to Italy three tons of extra fuel. The airline saved just $50 on the flight but an extra 600kg of CO2 was into the atmosphere. Greenpeace said this a "classic example of a company profit before planet". It said: "They'll happily extra fuel on the fire for a small boost to their profit margin."