KLM is to compensate for the additional four million tons of carbon dioxide emissions it is set to release in the coming four years by investing in sustainable projects, reports news agency ANP on Friday morning.

KLM has signed an agreement to compensate for the emission of harmful greenhouse gases by its planes with the World Wildlife Fund. The campaign will start on September 1 and the renewable projects will be mainly in developing countries. No financial details were disclosed.
The Dutch national carrier says it is also planning to modernise its fleet and reduce the amount of fuel used so that the volume of emissions per passenger is lowered by 17% in 2020.
Legislation forcing the aviation industry to buy emission rights is expected to be introduced in 2012.